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If* QORQ BUREAU OF MINES 

I U S^OS INFORMATION CIRCULAR/1 990 



£>sJ73 
2^3 9 



Electrical Accidents in Mining 
(1980-85) 

Fatal and Nonfatal Accidents 
Underground and on the Surface 
at Underground Coal and Metal- 
Nonmetal Mines 



By A. Oyler 




U.S. BUREAU OF MINES 
1910-1990 

THE MINERALS SOURCE 



%U OF ^ 



Mission: Asthe Nation's principal conservation 
agency, the Department of the Interior has respon- 
sibility for most of our nationally-owned public 
lands and natural and cultural resources. This 
includes fostering wise use of our land and water 
resources, protecting our fish and wildlife, pre- 
serving the environmental and cultural values of 
our national parks and historical places, and pro- 
viding for the enjoyment of life through outdoor 
recreation. The Department assesses our energy 
and mineral resources and works to assure that 
their development is in the best interests of all 
our people. The Department also promotes the 
goals of the Take Pride in America campaign by 
encouraging stewardship and citizen responsibil- 
ity for the public lands and promoting citizen par- 
ticipation in their care. The Department also has 
a major responsibility for American Indian reser- 
vation communities and for people who live in 
Island Territories under U.S. Administration. 



Information Circular 9259 

H 

Electrical Accidents in Mining 
(1980-85) 

Fatal and Nonfatal Accidents 
Underground and on the Surface 
at Underground Coal and Metal- 
Nonmetal Mines 



By A. Oyler 



UNITED STATES DEPARTMENT OF THE INTERIOR 
Manuel Lujan, Jr., Secretary 

BUREAU OF MINES 
T S Ary, Director 



& & 

^ ^ 

">■<$> 




Library of Congress Cataloging in Publication Data: 



Oyler, Anne Marie 

Electrical accidents in mining, 1980-85 : fatal and nonfatal accidents underground 
and on the surface at underground coal and metal-nonmetal mines / Anne M. 
Oyler. 

p. cm. - (Bureau of Mines information circular; 9259) 

Includes bibliographical references. 

Supt. of Docs, no.: I 28.27:9259. 

1. Mining accidents-United States. 2. Mining safety-United States. I. Title. 
II. Series: Information circular (United States. Bureau of Mines); 9259. 

TN295.U4 [HD7269.M61U6] 622 s-dc20 [363.11'%22'0973] 

90-1703 CIP 



CONTENTS 

Page 

Abstract 1 

Introduction 2 

Electrical accidents in underground coal mines 2 

Fatalities 2 

Nonfatal accidents 2 

Electrical accidents at the surface at underground coal mines 11 

Fatalities 11 

Nonfatal accidents 11 

Electrical accidents in underground metal-nonmetal mines 17 

Fatalities 17 

Nonfatal accidents 17 

Electrical accidents at the surface at underground metal-nonmetal mines 22 

Fatalities 22 

Nonfatal accidents 22 

Cost information 27 

Conclusions 45 

References 46 

Bibliography 46 

Appendix A— Description of information categories and definition of nonfatal accidents as used 

in this report 47 

Appendix B.- Visual representations of information 48 

ILLUSTRATIONS 

1. Fatal and nonfatal electrical accidents in underground coal mines, 1980-85 3 

2. Fatal and nonfatal electrical accidents at the surface at underground coal mines, 1980-85 12 

3. Fatal and nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85 18 

4. Fatal and nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85 ... 23 

B-l. Fatal electrical accidents in underground coal mines, 1980-85 49 

B-2. Nonfatal electrical accidents in underground coal mines, 1980-85 52 

B-3. Fatal electrical accidents at the surface at underground coal mines, 1980-85 56 

B-4. Nonfatal electrical accidents at the surface at underground coal mines, 1980-85 58 

B-5. Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85 62 

B-6. Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85 65 

TABLES 

1. Electrical fatalities versus total fatalities in underground coal mines 2 

2. Summary of fatal electrical accidents in underground coal mines 4 

3. Years of experience at specific job when fatal electrical accident occurred in underground coal mines ... 5 

4. Times when electrical fatalities occurred in underground coal mines 5 

5. Electrical nonfatal accidents versus total nonfatal accidents in underground coal mines 5 

6. Summary of nonfatal electrical accidents in underground coal mines 6 

7. Years of experience at specific job when nonfatal electrical accident occurred in underground coal 

mines 10 

8. Times when electrical nonfatal accidents occurred in underground coal mines 10 

9. Total days lost per year as a result of nonfatal electrical accidents in underground coal mines 10 

10. Electrical fatalities versus total fatalities at the surface at underground coal mines 11 

11. Summary of fatal electrical accidents at the surface at underground coal mines 11 

12. Years of experience at specific job when fatal accident occurred at the surface at underground coal 

mines 13 

13. Times when electrical fatalities occurred at the surface at underground coal mines 13 

14. Electrical nonfatal accidents versus total nonfatal accidents at the surface at underground coal mines ... 13 

15. Summary of nonfatal electrical accidents at the surface at underground coal mines 14 



TABLES-Continued 

Page 

16. Years of experience at specific job when nonfatal electrical accident occurred at the surface at 

underground coal mines 16 

17. Times when electrical nonfatal accidents occurred at the surface at underground coal mines 16 

18. Total days lost per year as a result of nonfatal electrical accidents at the surface at underground coal 

mines 16 

19. Electrical fatalities versus total fatalities in underground metal-nonmetal mines 17 

20. Summary of fatal electrical accidents in underground metal-nonmetal mines 17 

21. Electrical nonfatal accidents versus total nonfatal accidents in underground metal-nonmetal mines 18 

22. Summary of nonfatal electrical accidents in underground metal-nonmetal mines 19 

23. Years of experience at specific job when nonfatal electrical accident occurred in underground 

metal-nonmetal mines 21 

24. Times when electrical nonfatal accidents occurred in underground metal-nonmetal mines 21 

25. Total days lost per year as a result of nonfatal electrical accidents in underground metal-nonmetal 

mines 21 

26. Electrical fatalities versus total fatalities at the surface at underground metal-nonmetal mines 22 

27. Summary of fatal electrical accidents at the surface at underground metal-nonmetal mines 22 

28. Years of job experience at specific job when fatal electrical accident occurred at the surface at 

underground metal-nonmetal mines 24 

29. Times when electrical fatal accidents occurred at the surface at underground metal-nonmetal mines .... 24 

30. Electrical nonfatal accidents versus total nonfatal accidents at the surface at underground 

metal-nonmetal mines 24 

31. Summary of nonfatal electrical accidents at the surface at underground metal-nonmetal mines 25 

32. Years of experience at specific job when nonfatal electrical accident occurred at the surface at 

underground metal-nonmetal mines 26 

33. Times when electrical nonfatal accidents occurred at the surface at underground metal-nonmetal 

mines 26 

34. Total days lost per year as a result of nonfatal electrical accidents at the surface at underground 

metal-nonmetal mines 26 

35. Cost information relative to electrical accidents in underground coal mines, 1980 27 

36. Cost information relative to electrical accidents in underground coal mines, 1981 28 

37. Cost information relative to electrical accidents in underground coal mines, 1982 29 

38. Cost information relative to electrical accidents in underground coal mines, 1983 30 

39. Cost information relative to electrical accidents in underground coal mines, 1984 31 

40. Cost information relative to electrical accidents in underground coal mines, 1985 32 

41. Cost information relative to electrical accidents at the surface at underground coal mines, 1980 32 

42. Cost information relative to electrical accidents at the surface at underground coal mines, 1981 33 

43. Cost information relative to electrical accidents at the surface at underground coal mines, 1982 34 

44. Cost information relative to electrical accidents at the surface at underground coal mines, 1983 35 

45. Cost information relative to electrical accidents at the surface at underground coal mines, 1984 36 

46. Cost information relative to electrical accidents at the surface at underground coal mines, 1985 37 

47. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1980 37 

48. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1981 38 

49. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1982 38 

50. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1983 39 

51. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1984 40 

52. Cost information relative to electrical accidents in underground metal-nonmetal mines, 1985 40 

53. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1980 40 

54. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1981 41 

55. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1982 41 



TABLES-Continued 



ui 



Page 



56. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1983 42 

57. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1984 43 

58. Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 

1985 44 



ELECTRICAL ACCIDENTS IN MINING (1980-85) 



Fatal and Nonfatal Accidents Underground 

and on the Surface at Underground Coal 

and Metal-Nonmetal Mines 



By A. Oyler 1 



ABSTRACT 

The U.S. Bureau of Mines has compiled data on the major causes of fatal and nonfatal electrical 
accidents related to mining, and their associated costs, for the 1980-85 period. Specific electrical problem 
areas were identified, allowing future research to be focused on reducing the frequency of these 
occurrences. Recommendations for reducing the number of electrical accidents and injuries are 
provided. 

The four mining sectors for which data were gathered and compiled are (1) underground coal mines, 
(2) surface at underground coal mines, (3) underground metal-nonmetal mines, and (4) surface at 
underground metal-nonmetal mines. Nine categories of information pertaining to specific aspects of the 
accident are used in this report: activity engaged in when the accident occurred, source of injury, job 
title, mining method, location, machine, nature of injury, accident type, and part of body affected. The 
number of years of experience at the specific job the employee was performing when the accident 
occurred, time of accident, and in the case of nonfatal accidents, the total days lost per year, are also 
summarized. 



'Computer programmer, Pittsburgh Research Center, U.S. Bureau of Mines, Pittsburgh, PA. 



INTRODUCTION 



The data contained in this report were accessed from 
the Mine Safety and Health Administration (MSHA) 
accident-injury data base. This data base contains infor- 
mation on all U.S. mine accidents that have occurred since 
1972 for coal mines and 1974 for metal-nonmetal mines. 

The data base has 50 categories of information per- 
taining to specific aspects of each accident. Brief defini- 
tions of the nine categories selected for use in this report 
are given in appendix A, along with definitions of nonfatal 
accidents. Appendix B contains bar charts reflecting the 
data presented in this report. 

The cost information was gathered from an accident 
cost indicator model (ACIM) (1-2), } The model lists 
industry-, family-, and public-sector-related costs of the 
accidents for 1980 through 1985 for each mining sector. 

An investigation by MSHA provided information on 
coal mine electrical fatalities for the 1970-82 period. The 
information categories used included accident type and 
location, victim status, controlling company name, system 
voltage type, district code, date accident occurred, mine 



identification code, and accident narrative descriptions. To 
allow future research to be focused on reducing the fre- 
quency of fatal and nonfatal electrical accidents related to 
mining, the U.S. Bureau of Mines decided to do further 
work to include the following nine categories of accident 
information: activities engaged in when the accident oc- 
curred, source of injury, job title, mining method, location, 
machine, nature of injury, accident type, and part of body 
affected. Data on the number of years of experience at 
the specific job, time of accident, and total days lost per 
year for nonfatal accidents were included in the Bureau's 
analysis. 

Other differences between the MSHA investigation and 
this report include the following: (1) this report deals 
not only with electrical fatalities but with nonfatal acci- 
dents as well, (2) metal-nonmetal mines were included, 
(3) different categories of information have been acces- 
sed from the data base, (4) the data are presented in a 
different format and bar charts have been added, and (5) 
the period of time is 1980 through 1985. 



ELECTRICAL ACCIDENTS IN UNDERGROUND COAL MINES 



Figure 1 is a graphical presentation of electrical acci- 
dents in underground coal mines for the 1980-85 period. 
Observations concerning fatal and nonfatal accidents fol- 
low, with the pertinent information relative to each cat- 
egory summarized in tabular form. 

FATALITIES 

Of 474 total fatalities that occurred in underground coal 
mines from 1980 through 1985, 32 or 6.8% were electrical 
in nature (table 1). Nineteen of these incidents occurred 
while the victim was performing electrical maintenance and 
repair. The source of injury in most instances was elec- 
trical apparatus (13 of 32 cases), followed by conductors, 
cables, and trolley poles (12 of 32 cases). All victims suf- 
fered a fatal electrocution. In 62% of these accidents, the 
employee had less than 5 years of experience at the spe- 
cific job being performed when the accident occurred (20 
of 32 cases). The average age of the victims was 34. 

Tables 2 through 4 summarize the pertinent information 
relative to the fatal electrical accidents recorded in the 
1980-85 period. 

NONFATAL ACCIDENTS 

Of the 66,995 nonfatal accidents that occurred in 
underground coal mines from 1980 to 1985, 1,146 or 



approximately 2% were electrical in nature (table 5). 
Electrical repair and maintenance was the activity engaged 
in 38% of the time when the nonfatal incident occurred 
(439 of 1,146 cases). The two most common sources of 
injury were electrical apparatus (478 of 1,146 cases), and 
conductors, cables, trolley poles (466 of 1,146 cases). 
Electrical arc burns resulted 53% of the time and the hand 
was the part of the body most likely to be affected (349 of 
1,146 cases). In 64% of these accidents, the employee had 
less than 5 years of experience at the specific job being 
performed when the accident occurred (742 of 1,146 
cases). The average age of the victims was 35. 

Tables 6 through 9 summarize the pertinent information 
relative to the nonfatal electrical accidents recorded in 
underground coal mines. 



Table 1 .-Electrical fatalities versus total 
fatalities in underground coal mines 

_____ 



1980 . . 

1981 . . 

1982 . . 

1983 . . 

1984 . . 

1985 . . 
Total 



Electrical 


Total 


fatalities 


fatalities 


10 


94 


8 


112 


4 


83 


4 


44 


3 


96 


3 


45 



32 



474 



Italic numbers in parentheses refer to items in the list of references 
preceding the appendixes at the end of this report. 



</> 



Q 
H 

<X 



O 

o: 
lu 
as 

z: 
3 



350T 



300-- 



250" 



200" 



158- 



188- 



50-- 




KEY 
Fatal 



Y///A Nonfatal 



1988 1981 1982 1983 1984 1985 

Figure 1. -Fatal and nonfatal electrical accidents in underground coal mines, 1980-85. 



Table 2.-Summary of fatal electrical accidents in underground coal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment 

Handle supplies, material 

Move power cable 

Rerail equipment 

Inspect machinery 

Drill face, rib, side 

Walk, run 

Bolt roof 

Operate rock dust machine 

Operate shuttle car operation 

Inspect mine storage bins 

Idle 

Source of injury: 

Electrical apparatus 

Conductors, cables, trolley poles . . . 

Transformers, converters 

Underground mining machines .... 

Mine jeep, jitney 

Job title: 

Electrician 

Laborer, muck machine operator . . . 

Maintenance foreman 

Roof bolter 

Mechanic 

Labor foreman 

Mine foreman 

Blaster 

Drill operator 

Motorman 

Wireman 

Section foreman 

Master electrician 

Laborer, propman 

Shuttle car operator 

Mining method: 

Continuous 

Conventional-stope 

Not defined 

Longwall 

Location: 

Face 

Other 

Intersection 

Not defined 

Machine: 

Unknown 

Roof bolter 

Continuous miner, tunnel borer .... 

Shuttle car 

Pump 

Man trip, man car, jeep, personnel 
carrier, etc 

Cutting machine (mining only), chain 
cutter 

Rock drill, jackleg, jackhammer, 
drifter, etc 

Mine car, nipper truck, timber truck 
(underground only) 

Rock duster 

Conveyor, all types; belt feeder .... 

Plow shearer, longwall machine .... 

Machine, not elsewhere classified . . . 

Large shop tools: lathe, drill, 

press, etc 

Nature of injury: 

Electric shock, electrocution 

Accident type: 

Electric current 

Part of body affected: Body systems . 



3 


5 


3 


3 


2 


3 


19 




1 














2 




1 














2 




































































































1 






















1 






















1 






















1 







4 


4 


2 


1 


1 


1 


13 


5 


3 


1 


1 


2 





12 


1 








1 





2 


4 





1 





1 








2 








1 











1 


2 


2 


1 


2 








7 


1 


1 


1 








1 


4 


1 





1 


1 


1 





4 


1 


1 








1 





3 





1 











1 


2 











1 





1 


2 


1 











1 





2 


1 



















1 



















1 



















1 






















1 



















1 



















1 






















1 













7 


6 


3 


1 








17 


3 


1 





1 


2 


1 


8 





1 


1 


1 


1 


1 


5 











1 





1 


2 


3 


4 


1 


1 


1 


3 


13 


6 


2 


2 


1 








11 





2 


1 





2 





5 


1 








2 








3 


3 


2 


3 


2 





2 


12 


2 











1 





3 


1 


2 














3 





2 


1 











3 











1 


1 





2 


1 

















1 


1 

















1 


1 

















1 


1 

















1 





1 














1 





1 














1 











1 








1 














1 





1 

















1 


1 


10 


8 


4 


4 


3 


3 


32 


10 


8 


4 


4 


3 


3 


32 


10 


8 


4 


4 


3 


3 


32 



Table 3.-Years of experience 1 at specific job when fatal electrical 
accident occurred in underground coal mines 

Year 0-5 6-10 11-15 16-20 Over 20 

1980 7 2 1 

1981 6 1 1 

1982 3 1 

1983 4 

1984 1 2 

1985 _3 

Total 20 9 1 1 1_ 

'Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 4.-Times when electrical fatalities occurred in underground coal mines 



1980 1981 



1982 



1983 1984 1985 



Total 



11:01 a.m. to 1:01 p.m. 

1:01 to 3:01 p.m 

3:01 to 5:01 p.m 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m 

11:01 p.m. to 1:01 a.m. 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m 

Unknown 



2 














2 


4 


2 


1 











1 


4 





1 








1 





2 


1 

















1 








1 





1 





2 


3 


1 














4 











1 








1 





1 


1 





1 





3 











1 








1 


1 


2 


1 











4 


1 


1 


1 











3 





1 














1 











2 








2 



NOTE.-From 1980 through 1985, 16 of 30 accidents occurred in the afternoon. In 2 cases, 
times were not listed and are shown as unknown. 



Table 5.-Electrical nonfatal accidents versus total nonfatal accidents 
in underground coal mines 



Year 



Electrical nonfatal 
accidents 



Total nonfatal 
accidents 



1980 .. 

1981 . . 

1982 .. 

1983 .. 

1984 .. 

1985 . . 
Total 



303 
243 
240 
120 
122 
118 



16,398 

13,257 

12,610 

8,172 

8,740 

7,818 



1,146 



66,995 



Table 6.-Summary of nonfatal electrical accidents in underground coal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment 

Handle supplies, material 

Maintain machine 

Move power cable 

Rerail equipment 

Operate, locomotive 

Operate, ride man trip 

Inspect machinery 

Use handtools 

Escaping a hazard 

Use continuous miner 

Operate shuttle car 

Operate locomotive 

Idle 

Weld, cut 

Bolt roof 

Unknown 

Operate load-haul-dump 

Bolt roof, insert bolt 

Walk, run 

Observe operations 

Other 

Ride equipment 

Use powered handtools 

Cleanup 

Handle timber 

Operate jitney 

Supervise 

Operate conveyor belt 

Operate loading machine 

Get on-off equipment 

Hand load , 

Bolt roof, drilling 

Drill face, rib, side 

Hang tubes, ropes, wire, pipe 

Use cutting machine 

Operate underground equipment . . , 

Inspect mine storage bins 

Couple mine cars 

Move equipment 

Grinder 

Handle explosives 

Lay track, roadbed 

Sprag, block mine cars 

Bar down face, roof 

Caging 

Cement work , 

Horseplay 

Bolt roof, tramming 

Operate rock dust machine 

Crawling, kneeling 

Operate longwall equipment 

Set, relocate pipes 

Source of injury: 

Electrical apparatus 

Conductors, cables, trolley poles . . 

Flame, fire, smoke 

Transformers, converters 

Floor, bottom 

Underground mining machines 

Mine jeep, jitney 

Acids, alkalies (wet cement) 



118 


99 


88 


53 


51 


30 


439 


27 


27 


40 


16 


10 


8 


128 


18 


14 


14 


8 


16 


15 


85 


20 


14 


11 


5 


7 


12 


69 


18 


14 


16 


4 


2 


6 


60 


17 





16 


6 








39 


11 


6 


6 


4 


4 


4 


35 


6 


6 


11 


3 





9 


35 


4 


3 


4 


5 


5 


9 


30 


10 


10 


4 


3 


1 





28 


3 


5 


2 


2 


5 


1 


18 


4 


2 


2 


1 


2 


4 


15 





8 








4 


2 


14 


4 


3 


1 


1 


3 


1 


13 


7 





3 


1 


1 





12 


4 


3 


1 





2 


2 


12 


1 


1 


5 


1 


1 


1 


10 


2 


2 








2 


3 


9 


2 


2 





1 


2 


1 


8 


1 


3 


1 


1 


2 





8 


2 


3 








1 





6 


2 


2 


1 








1 


6 


4 


1 














5 


2 


2 


1 











5 





2 


1 


2 








5 


2 





1 








1 


4 


2 


1 


1 











4 


2 





1 








1 


4 


2 














1 


3 


1 


1 











1 


3 





2 


1 











3 


2 

















2 


1 





1 











2 





1 


1 











2 





1 











1 


2 








1 


1 








2 





1 











1 


2 








2 











2 











1 


1 





2 








1 


1 








2 


1 



















1 



















1 



















1 






















1 



















1 



















1 






















1 



















1 
















1 































1 



















1 



















1 




113 


110 


108 


53 


57 


37 


478 


132 


95 


91 


46 


51 


51 


466 


11 


11 


11 


6 


3 


14 


56 


7 


5 


5 


3 


1 


3 


24 


8 


4 


3 


2 


2 





19 


2 


1 


6 


2 


2 


4 


17 


5 


3 


3 


1 


1 


1 


14 


1 


4 








1 


1 


7 



Table S.-Summary of nonfatal electrical accidents in underground eoal mines-Continued 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Source of injury-Continued 

Underground narrow-gage railcars . . . 

Posts, caps, timbers 

Belt conveyors 

Metal (pipes, wire, nails, etc.) 

Apparel 

Machines, office 

Side, rib 

Motors 

Metal covers, guards, gates, roof bolt 
plates 

Pumps, fans, compressors, engines . . 

Broken rock, coal waste 

Explosives 

Elevators, cages, skips 

Wrench 

Noise 

Back, roof, hanging wall, underground 

Powered handtools 

Roof bolts 

Grinder, polisher, buffer 

Bodily motion 

Liquids 

Power saw 

Chains, ropes, cables, not conveyor . . 

Cribbing 

Chemicals 

Handtools (not powered) 

Nonpowered vehicles 

Hoisting apparatus 

Molten metal 

Forklifts, stackers 

Job title: 

Mechanic 

Electrician 

Laborer, muck machine operator 

Motorman 

Shuttle car operator 

Roof bolter 

Labor foreman 

Maintenance foreman 

Continuous miner operator 

Continuous miner helper 

Unknown 

Scoop car operator 

Conveyor man 

Mine foreman 

Cutting machine operator 

Master electrician 

Roof bolt helper 

Section foreman 

Wireman 

Fire boss 

Trackman 

Trainee 

Superintendent 

Laborer, propman 

Loading machine operator 

Rock duster 

Assistant mine foreman 

Jackster 

Pumper 

Stopping builder 



3 
2 

3 
2 
1 
2 
1 

1 
1 
2 
1 
1 


1 
1 
1 
1 












65 

46 

31 

,27 

12 

11 

16 

7 

8 

9 

5 

3 

6 

4 

3 

4 

5 

1 

4 

1 

2 

4 

2 

3 

1 

2 



1 

1 

1 





1 
2 


1 
1 






1 
1 
1 





1 
1 











42 

38 

24 

11 

12 

11 

14 

11 

6 

6 

2 

10 

4 

5 

4 

2 

2 

4 

3 

3 

4 

3 

2 

2 

1 

1 

4 



2 

3 



2 




1 
1 


2 


2 

1 



1 






1 
1 
1 








34 

46 

16 

33 

10 

12 

10 

5 

4 

2 

13 

3 

6 

2 

1 

5 

1 

3 

2 

4 

1 

2 

2 

3 

1 

1 

1 

3 

5 

1 





1 



1 
1 




1 

















1 
1 
1 





22 
28 
9 
9 
8 
2 
6 
6 
4 
1 
2 
3 

1 




1 
2 
2 



1 
4 
1 

1 






1 
1 




1 




1 























28 
30 
7 
4 
5 
8 
2 
4 
2 
2 

2 
2 
2 
1 
2 
2 

1 

1 



1 
4 

1 







2 











1 
1 













1 
1 
1 

23 
16 
7 
3 
10 
6 
2 
6 
4 
5 
4 
4 
4 
1 
4 

1 
3 

1 


2 
2 
2 


1 





214 

204 

94 

87 

57 

50 

50 

39 

28 

25 

26 

25 

22 

15 

13 

13 

11 

11 

11 

11 

10 

9 

8 

10 

7 

12 

6 

6 

9 

5 



Table 6.-Summary of nonfatal electrical accidents in underground coal mines-Continued 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Job title-Continued 

Drill operator 

Supplyman 

Rock driller 

Electrical helper 

Longwall shear operator 

Utility man 

Belt cleaner 

Blaster 

Welder, cement man 

Master mechanic 

Beltman 

Brakeman, rope rider 

Tractor operator 

Brattice man 

Jack setter 

Rodman 

Boom operator 

Yard foreman 

Safety representative 

Timberman 

Battery station operator 

Truck driver 

Electrical engineer 

Waterline man 

Scoop tram operator 

Transportation trainee 

Mining method: 

Continuous 

Not defined 

Conventional-stope 

Longwall 

Other 

Shortwall 

Hand 

Location: 

Other 

Face 

Not defined 

Intersection 

Shop 

Vertical shaft 

Inclined shaft 

Nature of injury: 

Electrical arc burn 

Electrical burn (contact burn) . 

Electrical shock (electrocution) 

Burn or scald (heat) 

Multiple injuries 

Asphyxia 

Bruise 

Sprain, strain 

Chemical burns 

Laceration, cut, puncture 

Unclassified, not determined . 

Fracture 

Poisoning 

Dislocation 

Scratches, abrasions 

Hearing loss or impairment . . 

Dust in eyes 

Other 



1 





1 


1 


1 


1 


5 





2 


1 








2 


5 





1 














1 


1 


1 


1 





1 





4 


2 











1 


1 


4 


1 


1 


1 





1 





4 


2 





1 





1 





4 


1 





1 








1 


3 


3 

















3 


1 


1 


1 











3 


2 








1 


1 





4 











1 


1 





2 











1 


1 





2 





1 








1 





2 


1 



















1 



















1 



















1 




























1 

























1 










1 






















1 



















1 






















1 



















1 






















1 




192 


147 


113 


70 


70 


61 


653 


57 


55 


91 


29 


33 


30 


295 


40 


28 


26 


10 


9 


13 


126 


6 


8 


1 


8 


4 


7 


34 


6 


5 


7 


3 


6 


7 


34 


2 

















2 








2 











2 


142 


120 


88 


45 


51 


47 


493 


67 


42 


40 


23 


21 


27 


220 


38 


36 


67 


29 


22 


26 


218 


37 


34 


29 


19 


21 


13 


153 


8 


4 


8 


2 


5 


1 


28 


7 


4 


4 


1 


2 


4 


22 


4 


3 


4 


1 








12 


164 


134 


124 


53 


78 


60 


613 


54 


43 


51 


39 


17 


17 


221 


38 


29 


44 


10 


14 


22 


157 


6 


3 


6 


4 


2 


11 


32 


10 


7 


2 


3 


4 


1 


27 


5 


9 


5 


2 


1 


5 


27 


10 


2 


2 


1 








15 


3 


6 


2 


1 


3 





15 


2 


4 





2 


1 


1 


10 


4 


2 





1 








7 


2 





1 


1 


1 


1 


6 


2 


1 


1 


1 








5 


1 


1 





1 


1 





4 


1 


1 


1 











3 


1 

















1 





1 














1 








1 











1 











1 








1 



Table 6.-Summary of nonfatal electrical accidents in underground coal mines-Continued 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Accident type: 

Rash burns, electric 

Electric current 

Contact with hot substance 

Inhalation of toxics 

Fall from machine 

Struck against stationary object . . . 

Absorption of toxics 

Struck, not elsewhere classified . . . 

Struck by flying object 

Struck against moving object 

Fall against object 

Fall to working surface 

Unknown 

Struck by falling object 

Overexertion 

Bodily reaction 

Rash burns, welding 

Caught in moving stationary object 
Part of body: 

Hand 

Body systems 

Multiple injuries 

Eyes 

Rngers 

Upper extremities, multiple 

Wrist 

Leg 

Arm 

Face, multiple parts 

Face 

Forearm 

Back 

Head, multiple parts 

Knee 

Shoulders 

Elbow 

Neck 

Head 

Thigh 

Nose 

Internal ear 

Ankle 

Lower leg 

Hips 

Chest 

Trunk, multiple injuries 

Lower leg 

Upper arm 

Leg, multiple injuries 

Body parts 

Unclassified 



176 


136 


122 


51 


79 


60 


624 


83 


74 


97 


52 


32 


40 


378 


9 


3 


6 


5 


3 


11 


37 


6 


11 


5 


3 


3 


5 


33 


8 


5 


2 


1 


2 





18 


3 


3 


3 


1 








10 


1 


3 





2 


1 


1 


8 


4 


1 


1 





1 





7 


2 


1 


1 


1 


1 





6 


3 


2 














5 


3 








2 








5 


1 


1 


1 


1 








4 


1 


1 











1 


3 


2 

















2 


1 





1 











2 





2 














2 








1 











1 











1 








1 


92 


75 


79 


34 


33 


36 


349 


44 


39 


49 


13 


16 


27 


188 


38 


40 


33 


25 


23 


17 


176 


52 


29 


27 


15 


12 


11 


146 


15 


13 


16 


10 


14 


6 


74 


9 


9 


8 


11 


6 


11 


54 


3 


5 


3 





4 


1 


16 


7 


2 


2 


1 


1 


2 


15 


5 


1 


3 


4 


2 





15 


4 


5 


1 





2 


2 


14 


3 


4 


2 


1 


2 


2 


14 


6 


2 





2 


1 


2 


13 


6 


4 








1 





11 


4 


2 


3 











9 


2 


4 


2 





1 





9 


4 


2 


2 











8 


3 





2 


2 








7 


1 




1 





2 





5 


1 




2 


1 








5 







1 





1 





3 


1 
















2 
















1 


2 








1 





1 





2 


1 



















1 



















1 






















1 



















1 






















1 



















1 



















1 






















1 











10 



Table 7.-Years of experience 1 at specific job when nonfatal electrical 
accident occurred in underground coal mines 

Year 0-5 6-10 11-15 16-20 Over 20 Unknown 

1980 228 44 13 3 8 7 

1981 170 51 8 1 6 7 

1982 147 52 15 2 5 19 

1983 69 36 2 13 

1984 58 41 8 3 12 

1985 70 32 J) 2 5 

Total 742 256 55 11 1$) 63 

'Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 8.-Times when electrical nonfatal accidents occurred 
in underground coal mines 



1980 1981 



1982 1983 1984 1985 



Total 



11:01 a.m. to 1:01 p.m. 

1:01 to 3:01 p.m 

3:01 to 5:01 p.m 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m. . . . 
11:01 p.m. to 1:01 a.m. 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m. . . . 
Unknown 



22 


20 


20 


7 


6 


5 


80 


28 


25 


24 


9 


12 


12 


110 


31 


21 


18 


9 


7 


7 


93 


30 


15 


21 


16 


14 


15 


111 


21 


19 


19 


11 


10 


9 


89 


18 


21 


17 


4 


8 


8 


76 


23 


18 


18 


5 


4 


6 


74 


19 


13 


27 


13 


14 


13 


99 


23 


22 


18 


11 


10 


10 


94 


22 


15 


12 


9 


11 


10 


79 


30 


21 


19 


15 


9 


10 


104 


28 


28 


19 


9 


9 


8 


101 


8 


5 


8 


2 


8 


5 


36 



NOTE.-From 1980 through 1985, 589 of 1,110 accidents occurred in the a.m. In 36 cases, the 
times were not listed and are shown here as unknown. 



Table 9.-Total days lost per year as a result of nonfatal electrical 
accidents in underground coal mines 

Year Accidents 

1980 303 

1981 243 

1982 240 

1983 120 

1984 122 

1985 118 

Total 1,146 



Days lost 



4,169 
3,146 
3,541 
2,226 
4,302 
1,925 



19,309 



11 



ELECTRICAL ACCIDENTS AT THE SURFACE AT UNDERGROUND COAL MINES 



Figure 2 is a graphical presentation of fatal and nonfatal 
electrical accidents at the surface at underground coal 
mines including associated shops, yards, and tipples when 
located at the mine. 

FATALITIES 

Of the 45 total fatalities that occurred at the surface at 
underground coal mines including associated shops, yards, 
and tipples when located at the mine, 8 or 18% were elec- 
trical as shown in table 10. Five of these incidents oc- 
curred while the victim was performing electrical mainte- 
nance and repair. The source of injury in most instances 
was electrical apparatus (five of eight cases). All victims 
suffered a fatal electrocution. In three of the cases, the 
employee had less than 5 years of experience at the spe- 
cific job being performed when the accident occurred. In 
three cases, the employee had from 11 to 15 years of expe- 
rience at that specific job. The average age of the victims 
was 37. 

Tables 11 through 13 summarize the pertinent informa- 
tion relative to the fatal accidents recorded at the surface 
at underground coal mines. 

NONFATAL ACCIDENTS 

Of the 5,489 nonfatal accidents that occurred at the 
surface at underground coal mines, 125 or 2.3% were 
electrical in nature as shown in table 14. Electrical repair 



and maintenance was the activity most commonly engaged 
in when the nonfatal incident occurred (69 of 125 cases). 
In 67 of 125 cases, the source of injury was electrical ap- 
paratus and in 24 of 125 cases, conductors, cables, and 
trolley poles were the source. Electrical arc burns resulted 
in 62 of 125 cases with the hands being the part of the 
body most subject to injury. Mechanics and electricians 
led in the number of nonfatal electrical injuries incurred 
during this time period, with the most frequently injured 
part of the body being the hand. In almost 50% of these 
accidents, the employee had less than 5 years of experience 
at the specific job being performed when the accident 
occurred (63 of 125 cases). The average age of the victims 
was 37. 

Tables 15 through 18 summarize the pertinent informa- 
tion relative to nonfatal accidents at the surface at under- 
ground coal mines. 



Table 10.-Electrical fatalities versus total fatalities 
at the surface at underground coal mines 

"Year 



1980 . . 

1981 . . 

1982 . . 

1983 . . 

1984 . . 

1985 . . 
Total 



Electrical 


Total 


fatalities 


fatalities 





8 


1 


9 


2 


12 


2 


7 


1 


2 


2 


7 



45 



Table 1 1 .-Summary of fatal electrical accidents at the surface at underground coal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment 

Handle supplies, material 

Maintain machine 

Getting on-off equipment 

Source of injury: 

Electrical apparatus . 

Conductors, cables, trolley poles . . . 

Transformers, converters 

Job title: 

Electrician 

Mechanic 

Master electrician 

Mine foreman 

Truck driver 

Tipple operator 

Machine: 

Not recorded in MSHA data base . . . 

Machine, not elsewhere classified . . . 

Fan 

Ore haulage truck, off-highway 

Nature of injury: Electric shock, 

electrocution ^ ^.__,^_ 

Accident type: Electric current , 

Part of body: Body systems , 






1 


1 


1 


1 


1 


5 











1 








1 

















1 


1 








1 











1 





1 


1 


1 


1 


1 


5 








1 








1 


2 











1 








1 





1 


1 











2 














1 


1 


2 











1 








1 

















1 


1 








1 











1 











1 








1 








1 


1 


1 


1 


4 





1 





1 








2 

















1 


1 








1 











1 





1 


2 


2 


1 


2 


8 





1 


2 


2 


1 


2 


8 





1 


2 


2 


1 


2 


8 



12 



en 

I- 
z: 

LU 
Q 
t-i 
(_> 



O 

a: 

uj 

CD 




KEY 
Fatal 



/^^] Nonfatal 



1988 1381 1982 1983 1984 1985 

Figure 2.-Fatal and nonfatal electrical accident* at the surface at underground coal mines, 1980-85. 



13 



Table 12.-Years of experience 1 at specific job when fatal accident occurred 
at the surface at underground coal mines 

Year — —-——- q. 5 g_ 10 11 _ 15 16-2Q per 20 

1980 

1981 1 

1982 1 1 

1983 1 1 

1984 1 

1985 J) 1 1_ 

Total 3 3 1 1 

1 Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 13.-Times when electrical fatalities occurred at the surface 
at underground coal mines 



1980 



1981 1982 1983 1984 



1985 



Total 



11:01 a.m. to 1:01 p.m. 

1:01 to 3:01 p.m 

3:01 to 5:01 p.m 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m. . . . 
11:01 p.m. to 1:01 a.m. 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m. . . . 
Unknown 















1 




















1 









































1 









































2 



























































1 








2 
















































NOTE.-From 1980 through 1985, 6 of 8 accidents occurred in the afternoon. 



Table 14.- Electrical nonfatal accidents versus total nonfatal accidents at the 
surface at underground coal mines 



Year 



Electrical nonfatal 
accidents 



Total nonfatal 
accidents 



1980 .. 

1981 .. 

1982 .. 

1983 .. 

1984 .. 

1985 .. 
Total 



31 
27 
20 
13 
18 
16 



1,400 

1,124 

1,018 

617 

693 

637 



125 



5,489 



14 



Table 1 5.-Summary of nonfatal electrical accidents at the surface at underground coal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment . . 

Maintain machine 

Handle supplies, material 

Use handtools 

Rerail equipment 

Operate locomotive 

Inspect machinery 

Move power cable 

Operate surface equipment 

Idle 

Escaping a hazard 

Cleanup 

Operate mill equipment 

Operate power shovel 

Operate jitney 

Weld, cut 

Walk, run 

Move equipment 

Use powered handtools 

Not defined 

Source of injury: 

Electrical apparatus 

Conductors, cables, trolley poles 

Acids, alkalies (wet cement) 

Ground (surface) 

Flame, fire, smoke 

Transformers, converters 

Underground narrow-gage railcars 

Motors 

Mine jeep, jitney 

Metal (pipe, wire, nails, etc.) 

Surface mining machines 

Generators 

Noxious gases, not elsewhere classified 

Cranes, derricks 

Space heaters 

Passenger cars, trucks 

Metal covers, guards, gates, roof bolt 
plates 

Machines, not elsewhere classified, 

office machines 

Job title: 

Mechanic 

Electrician 

Laborer 

Maintenance foreman 

Mine foreman 

Motorman 

Unknown 

Shuttle car operator 

Superintendent 

Master electrician 

Outside foreman 

Communications repair 

Roof bolter 

Labor foreman 

Drill helper 

Inspector 

Brattice man 

Machinist 

Fire boss 

Belt man 

Welder 

Loading machine operator 

Electrical engineer 

Scoop car operator 

Trackman 

Truck driver 

Machine: 

Not recorded in MSHA data base 

Locomotive, rail-mounted; lorry car . . . 



19 


16 


6 


8 


12 


8 


69 


7 


1 


5 


1 


1 





15 


1 


3 


4 





2 


2 


12 





2 








1 


2 


5 


2 





2 











4 


1 


1 











1 


3 

















2 


2 





1 








1 





2 








1 


1 








2 

















1 
















1 
















1 



















1 



















1 













1 






















1 



















1 
















1 
















1 






















1 
















12 


17 


10 


6 


11 


11 


67 


9 


6 


2 


2 


3 


2 


24 


2 


1 


2 


1 








6 


1 


1 








2 


1 


5 





1 


2 


1 








4 


1 





1 








1 


3 





1 











1 


2 


2 

















2 


2 

















2 


1 





1 











2 


1 

















1 








1 











1 











1 








1 











1 








1 











1 








1 














1 





1 














1 





1 








1 











1 


13 


2 


3 


3 


3 


5 


29 


5 


4 


5 


1 


5 


5 


25 


3 


2 


4 


3 


3 


2 


17 


1 


3 





1 


2 





7 


1 


4 














5 





2 


1 


1 





1 


5 


1 


3 








1 





5 





2 


1 





1 





4 


3 

















3 











1 


1 


1 


3 





2 














2 





1 








1 





2 





1 


1 











2 








2 











2 








2 











2 














1 


1 


2 


1 



















1 



















1 






















1 






















1 






















1 



















1 



















1 

























1 




1 



















16 


12 


9 


4 


12 


9 


62 


4 


3 


4 


2 





2 


15 



Table 15.-Summary of nonfatal electrical accidents at the surface at underground coal mines-Continued 



15 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Machine-Continued 

Nonpowered handtools 3 5 1 1 10 

Man trip, man car, jeep, personnel 

carrier, etc 4 2 1 7 

Conveyor, all types; belt feeder 2 1 2 5 

Machine, not elsewhere classified 2 1 1 4 

Front-end loader, tractor-shovel, 

highlift, skip-loader, etc 2 1 3 

Load-haul-dump, scoop, tram, ram 

car, etc 1 1 1 3 

Welder 1 1 1 3 

Powered handtools 1 1 2 

Crane, derrick 2 2 

Service truck, pickup truck (not ore 

haulage) 1 1 2 

Rock duster 1 1 

Continuous miner, tunnel borer 1 1 

Fan 1 1 

Jumbo carriage-mounted drills on rails, 

tracks, tires 1 1 

Compressor 1 1 

Pump 1 1 

Cutting machine mining only, chain 

cutter 1 1 

Nature of injury: 

Electrical arc burn 12 17 10 6 9 9 63 

Electrical burn (contact burn) 8 4 1 4 4 21 

Electrical shock (electrocution) 5 1 3 2 1 2 14 

Chemical burn 2 1 2 1 6 

Burn or scald (heat) 2 3 1 6 

Multiple injuries 1 1 2 4 

Laceration, cut, puncture 1 1 1 1 4 

Sprain, strain 1 1 2 

Bruise 1 

Poisoning 1 

Dust in eyes 1 

Fracture 1« 

Unclassified 1 

Accident type: 

Rash burns, electric 12 17 8 6 9 9 61 

Electric current 13 5 4 3 6 6 37 

Absorption of toxics 2 1 2 1 6 

Contact with hot substance 2 3 1 6 

Struck against stationary object 1 1 2 

Fall from ladder 1 1 2 

Struck by flying object 1 1 2 

Fall from machine 2 2 

Caught in, under, or between a moving 

and a stationary object 1 

Fall to working surface 1 

Flash burns, welding 1 

Fall down raise, shaft 1 

Struck by, not elsewhere classified 1 

Inhalation of toxics 1 

Fall against object 1 

Part of body: 

Hand 7 9 6 2 2 5 31 

Multiple injuries 6 6 5 1 4 4 26 

Eyes 4 5 3 2 1 2 17 

Body systems 5 1 3 3 1 2 15 

Upper extremities, multiple 2 2 2 4 1 11 

Fingers 1 1 3 1 6 

Arm 1 1 2 1 5 

Back 1 1 1 3 

Wrist 1 1 2 

Face 2 2 

Forearm 2 2 

Leg 1 

Ankle 1 

Head 1 

Nose 1 

Knee Q 1 



16 



Table 16.-Years of experience 1 at specific job when nonfatal electrical 
accident occurred at the surface at underground coal mines 

Year 0-5 6-10 11-15 16-20 Over 20 Not listed 

1980 15 10 2 1 3 

1981 14 7 1 1 1 3 

1982 12 3 1 1 1 2 

1983 5 7 1 

1984 9 4 4 1 

1985 _8 3 2 1 2 

Total 63 34 U 4 3 10 

! Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 17. -Times when electrical nonfatal accidents occurred at the surface 
at underground coal mines 



1980 1981 1982 1983 1984 1985 



Total 



11:01 a.m. to 1:01 p.m. 

1:01 to 3:01 p.m 

3:01 to 5:01 p.m 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m. 

11:01 p.m. to 1:01 a.m. 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m 

Unknown 



2 


5 


6 


2 


2 


1 


18 


7 


5 


3 


1 


3 





19 


4 


3 


1 





2 


4 


14 


3 


1 


1 





2 


2 


9 


2 


1 





2 





2 


7 


2 


2 








1 


1 


6 


1 








1 


1 





3 








4 


1 








5 





1 


2 





2 





5 


1 


2 


1 


1 


1 


2 


8 


4 


3 


2 


3 


1 


3 


16 


4 


4 





2 


3 





13 


1 














1 


2 



NOTE.-From 1980 through 1985, 63 of 123 accidents occurred in the morning. In 2 cases, times 
were not listed and are shown as unknown. 



Table 18.-Total days lost per year as a result of nonfatal electrical accidents 
at the surface at underground coal mines 



Year 

1980 

1981 

1982 

1983 

1984 

1985 

Total 



Accidents 



Days lost 



31 
27 
20 
13 
18 
16 



429 
366 
233 
185 
553 
339 



125 



2,105 



17 



ELECTRICAL ACCIDENTS IN UNDERGROUND METAL-NONMETAL MINES 



Figure 3 is a graphical presentation of electrical fatal 
and nonfatal accidents in underground metal-nonmetal 
mines. 

FATALITIES 

Of 110 fatalities that occurred in underground metal- 
nonmetal mines from 1980 through 1985, 2% were elec- 
trical in nature (table 19). One fatality occurred while an 
electrician was performing electrical repair and mainte- 
nance on electrical apparatus; the other victim was a miner 
engaging in the welding and cutting of electrical apparatus. 
Both victims suffered electrocution. Both individuals had 
less than 5 years of experience at the specific job they were 
performing when the fatality occurred and both accidents 
occurred in the morning. One victim had been employed 
in that specific capacity for only 24 weeks. The other 
individual had 2 years 24 weeks of experience in that ca- 
pacity. The average age of the victims was 29. Table 20 
summarizes the pertinent information in this category. 

NONFATAL ACCIDENTS 

Of the 14,959 nonfatal accidents that occurred in un- 
derground metal-nonmetal mines, less than 1% were elec- 
trical in nature as identified in table 21. Electrical repair 
and maintenance was the activity most commonly engaged 
in when the nonfatal incident occurred (39 of 91 cases). 



In 38 of 91 cases, the source of injury was electrical ap- 
paratus and in 26 of 91 cases, conductors, cables, and 
trolley poles were the source of the injury. Electricians 
incurred the greatest number of injuries (20 of 91 cases). 
Twenty-nine nonfatal electrical shocks occurred during this 
time period and 28 electrical arc burns. Again, as in all 
previous categories, the part of the body most frequently 
injured in nonfatal accidents was the hand. Also, as in all 
previous categories, the majority of the employees injured 
had less than 5 years experience at the specific job they 
were performing when the injury occurred (64% or 58 of 
91 cases). The average age of the victims was 35. 

Tables 22 through 25 summarize the pertinent informa- 
tion relative to nonfatal electrical accidents in underground 
metal-nonmetal mines. 



Table 19.-Electrical fatalities versus total fatalities 
in underground metal-nonmetal mines 

"Year 



1980 . . 

1981 . . 

1982 . . 

1983 . . 

1984 . . 

1985 . . 
Total 



Electrical 


Total 


fatalities 


fatalities 





20 


1 


29 





23 


1 


11 





14 





13 



110 



Table 20.-Summary of fatal electrical accidents in underground metal-nonmetal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Weld, cut 

Maintain, repair electrical equipment 
Source of injury: Electrical apparatus . 
Job title: 

Miner 

Electrician 

Mining method: 

Other 

Conventional, stope 

Location: Other underground 

Machine: 

Welder 

Unknown 

Nature of injury: Electric shock, 

electrocution 

Accident type: Electric current 

Part of body: Body systems 



18 



cr> 



35t 



30-- 



LU 




Q 






20 


o 




<r 




LL. 




o 




IV 


15 


LU 




OQ 





10-- 



5" 








8 




KEY 
Fatal 



'////A Nonfatal 









1980 1981 1982 1983 1984 1985 

Figure 3.- Fata I and nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85. 



Table 21 .-Electrical nonfatal accidents versus total nonfatal accidents 
in underground metal-nonmetal mines 

Year Becfrteai nonfatal Total nonfatal 
accidents accidents 

1980 26 4,525 

1981 31 4,138 

1982 11 2,207 

1983 7 1,522 

1984 11 1,356 

1985 5 1,211 

Total 91 14,959 



Table 22.-Summary of nonfatal electrical accidents in underground metal-nonmetal mines 



19 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment 

Handle supplies, material 

Maintain machine 

Rerail equipment 

Welding, cutting 

Caging 

Operate locomotive 

Idle 

Drill face, rib, side 

Escaping a hazard 

Operate slusher 

Get on-off equipment 

Use handtools 

Use bull dozer 

Walk, run 

Use continuous miner 

Operate-ride mantrip 

Use powered handtools 

Bolt roof 

Bolt roof, insert bolt 

Couple mine cars 

Operate underground equipment . . . 

Move power cable 

Climb raise, shaft 

Use blow gun 

Observe operations 

Use cutting machine 

Source of injury: 

Electrical apparatus 

Conductors, cables, trolley poles . . . 

Underground mining machines 

Machines, office machines 

Flame, fire, smoke 

Elevators, cages, skips 

Acids, alkalies (wet cement) 

Surface mining machines 

Vehicles 

Passenger cars, trucks 

Transformers, converters 

Metal (pipe, wire, nails, etc.) 

Powered handtools 

Drill, percussive 

Molten metal 

Floor, bottom 

Coal and petroleum products 

Apparel 

Broken rock, coal waste 

Welder 

Miscellaneous 

Job title: 

Electrician 

Mechanic 

Miner 

Motorman 

Laborer, muck machine operator . . . 

Labor foreman 

Blaster 

Utility man 

Trainee 

Unknown 

Mine foreman 

Mechanic, repairman 

Master electrician 

Continuous miner 

Jackster 

Maintenance foreman 

Grizzly man 

Welder, cement man , 

Master mechanic 

Shuttle car operator 

Beltman , 



10 


12 


5 


3 


6 


3 


39 


2 


2 


2 


1 








7 


3 


2 





1 








6 


1 


2 








1 





4 


1 





1 


2 








4 


2 


1 














3 


2 


1 














3 





1 











1 


2 





1 








1 





2 





2 














2 


1 


1 














2 





1 


1 











2 








1 



















1 




























1 
















1 



















1 



















1 






































































































1 



















1 



















1 



















1 



















11 


17 


3 


3 


4 





38 


7 


8 


5 





5 


1 


26 





1 


1 








1 


3 








1 


2 








3 


1 


1 











1 


3 


2 

















2 


1 


1 














2 








1 






















1 



















1 

























1 



















1 
















1 



















1 










1 



















1 
















1 



















1 






















1 
















2 

















2 


1 

















1 


6 


4 


4 


1 


3 


2 


20 


2 


4 





2 


1 





9 


3 


3 


2 











8 


1 


5 








1 





7 


2 


2 


1 





1 





6 


1 


1 





2 








4 


1 





1 








1 


3 





1 








1 


1 


3 


1 


2 














3 


1 


1 











1 


3 


1 


2 














3 


1 





1 











2 


1 











1 





2 





1 








1 





2 





2 














2 


1 

























1 



















1 






















1 



















1 






















1 








20 



Table 22.-Summary of nonfatal electrical accidents In underground metal-nonmetal mines-Continued 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Job title-Continued 

Mucking machine 

Pumper 

Barge attendant 

Oiler, greaseman 

Cutting machine operator 

Drift miner 

Wireman 

Loading machine operator 

Machine: 

Unknown 

Machine, not elsewhere classified .... 

Welder 

Pump 

Rock drill, jackleg, jackhammer, 

drifter, etc 

Nonpowered handtools 

Roof bolter 

Man trip, man car, jeep, personnel 

carrier, etc 

Powered handtools 

Hydraulic, electric core drills 

Load-haul-dump, scoop tram, 

ram car, etc 

Continuous miner, tunnel borer 

Locomotive, rail-mounted; lorry car . . 
Service truck, pickup, utility truck 

(not ore haulage) 

Dozer, crawler tractor 

Pneumatic-blasting agent loader .... 
Ore-haulage truck, off-highway or 

underground 

Cutting machine (mining only), chain 

cutter 

Skip, elevator, cage 

Shuttle car 

Conveyor, all types; belt feeder 

Loading machine, gathering-arm, etc . 
Slusher, scraper hoist, scram, etc ... . 
Jumbo carriage-mounted drills on rails 

tracks, tires 

Fan 

Sizing machine 

Nature of injury: 

Electrical shock (electrocution) 

Electrical arc burn 

Electrical burn (contact burn) 

Asphyxia 

Burn or scald (heat) 

Chemical burn 

Multiple injuries 

Laceration, cut, puncture 

Sprain, strain 

Bruise 

Scratches, abrasions 

Fracture 

Other, not elsewhere classified 

Part of body: 

Body systems 

Hand 

Eyes 

Multiple injuries 

Upper extremities, multiple 

Ankle 

Fingers 

Arm 

Wrist 

Forearm 

Foot 

Body parts, not elsewhere classified . . 

Shoulders 

Knee 















1 







1 



















1 



















1 



















1 






















1 



















1 



















1 






















5 


1 


3 


2 


11 











3 


1 





4 








1 


2 








3 





1 











1 


2 














1 


1 


2 








2 











2 

















1 


1 














1 





1 














1 





1 














1 





1 














1 





1 














1 





1 














1 





1 











1 








1 








1 











1 








1 











1 





1 














1 


2 


1 














3 


2 


1 














3 





1 














1 





1 














1 





1 














1 


2 


2 














4 





1 














1 


2 


1 














3 


1 

















1 


4 


12 


5 


4 


3 


1 


29 


8 


8 


4 


2 


6 





28 


5 


6 


2 


1 


1 


2 


17 


3 


1 














4 


2 














1 


3 


1 


1 








1 





3 





1 



















1 
















1 






















1 
















1 



















1 


































1 




7 


13 


5 


4 


3 


1 


33 


3 


4 


2 


1 


1 


1 


12 


5 


3 


1 


1 


2 





12 


1 


2 


1 


1 


4 


1 


10 


2 


3 


2 





1 


1 


9 


2 


1 














3 


1 


1 














2 


1 


1 














2 


2 

















2 


1 


1 














2 


1 

















1 

















1 


1 





1 














1 





1 














. 1 



21 



Table 23.-Years of experience 1 at specific job when nonfatal electrical accident 
occurred in underground metal-nonmetal mines 

Year 0-5 6-10 11-15 16-20 Over 20 Unknown 

1980 18 4 2 2 

1981 19 7 1 2 2 

1982 10 1 

1983 6 1 

1984 5 3 1 2 

1985 __0 3 CI 2 

Total 58 17 2 1 4 9 

'Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 24.-Times when electrical nonfatal accidents occurred 
in underground metal-nonmetal mines 



1980 1981 



1982 1983 



1984 



1985 



Total 



11:01 a.m. to 1:01 p.m 1 3 4 1 2 3 14 

1:01 to 3:01 p.m 2 5 1 8 

3:01 to 5:01 p.m 3 1 2 1 7 

5:01 to 7:01 p.m 1 2 1 3 7 

7:01 to 9:01 p.m 1 2 1 4 

9:01 to 11:01 p.m 1 1 

11:01 p.m. to 1:01 a.m 1 1 

1:01 to 3:01 a.m 2 3 2 7 

3:01 to 5:01 a.m 1 1 1 1 4 

5:01 to 7:01 a.m 1 1 2 

7:01 to 9:01 a.m 3 6 1 3 13 

9:01 to 11:01 a.m 8 7 3 18 

Unknown 2 1 1 1 5 



NOTE.-From 1980 through 1985, 55 of 86 accidents occurred in the morning, 
were not listed and are shown as unknown. 



In 5 cases times 



Table 25.-Total days lost per year as a result of nonfatal electrical accidents 
in underground metal-nonmetal mines 

Year Accidents Days lost 

1980 26 215 

1981 31 520 

1982 11 267 

1983 7 39 

1984 11 71 

1985 5 237 

Total 91 1,349 



22 



ELECTRICAL ACCIDENTS AT THE SURFACE 
AT UNDERGROUND METAL-NONMETAL MINES 



Figure 4 is a graphical presentation of electrical acci- 
dents in underground metal-nonmetal mines at the surface, 
including associated shops, yards, and tipple when located 
at the mine. 

FATALITIES 

Of 17 fatalities that occurred in surface at underground 
metal-nonmetal mines, four were electrical in nature as 
identified (table 26). Each accident occurred while the 
victim was performing electrical maintenance and repair. 
All victims suffered electrocution. Three of the four indi- 
viduals had less than 5 years of experience at the specific 
job they were performing when the accident occurred. 
The average age of the victims was 39. Tables 27 through 
29 summarize the pertinent information in this category. 

NONFATAL ACCIDENTS 

Of the 2,281 nonfatal accidents that occurred at the 
surface at underground metal-nonmetal mines, 34 or 1.5% 
were electrical in nature (table 30). Electrical repair and 
maintenance was the activity most commonly engaged in 
when the nonfatal incident occurred (19 of 34 cases). 



Electrical apparatus was the most common source of injury 
(20 of 34 cases) and electrical arc burns were the 
predominant injury. This is the first category in which 
multiple injuries outnumbered hand injuries as the part of 
the body most commonly injured. In 59% of these acci- 
dents, the employees had less than 5 years of experience 
at the specific job they were performing when the accident 
occurred (20 of 34 cases). The average age of the victims 
was 39. 

Tables 31 through 34 summarize the pertinent informa- 
tion relative to nonfatal electrical accidents at the surface 
of underground metal-nonmetal mines. 



Table 26.-Electrical fatalities versus total fatalities at the 
surface at underground metal-nonmetal mines 

__ 



1980 . . 

1981 . . 

1982 . . 

1983 . . 

1984 . . 

1985 . . 
Total 



Electrical 


Total 


fatalities 


fatalities 





3 





2 


1 


3 


1 


1 


1 


5 


1 


3 



17 



Table 27.-Summary of fatal electrical accidents at the surface at underground metal-nonmetal mines 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment 
Source of injury: 

Electrical apparatus 

Generators 

Conductors, cables, trolley poles . . . 
Job title: 

Electrician 

Watchman 

Machine: 

Not recorded in MSHA data base . . . 

Skip, elevator, cage 

Nature of injury: Electric shock, 

electrocution 

Accident type: Electric current 

Part of body: Body systems 









1 


1 








2 

















1 


1 














1 





1 








1 


1 


1 





3 

















1 


1 








1 





1 


1 


3 











1 








1 








1 


1 


1 


1 


4 








1 


1 


1 


1 


4 








1 


1 


1 


1 


4 



23 



en 

21 

Ld 
Q 

<-> 



14 



12" 



10" 



8-- 



Q£ 6' 

Ld 











^l V/A 





1 1 
F 



KEY 
Fatal 



Y///A Nonfatal 



1980 



1981 



1982 



1983 



1984 



1985 



Figure 4.-Fatal and nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85. 



24 



Table 28.-Years of job experience 1 at specific job when fatal electrical accident 
occurred at the surface at underground metal-nonmetal mines 

Years 0-5 6-10 11-15 16-20 Over~20 

1980 

1981 

1982 1 

1983 1 

1984 1 

1985 _0 1 

Total 3 1 

x Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 29.-Times when electrical fatal accidents occurred at the surface 
at underground metal-nonmetal mines 

1980 1981 1982 1983 1984 1985 Total 

11:01 a.m. to 1:01 p.m 

1:01 to 3:01 p.m 1 1 

3:01 to 5:01 p.m 1 1 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m 

11:01 p.m. to 1:01 a.m 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m 1 1 2_ 

NOTE.-From 1980 through 1985, 2 accidents occurred in the morning and 2 accidents occurred 
in the afternoon. 



Table 30.-Electrical nonfatal accidents versus total nonfatal accidents at the 
surface at underground metal-nonmetal mines 

Year Electrical nonfatal Total nonfatal 
accidents accidents 

1980 13 651 

1981 9 711 

1982 7 322 

1983 2 191 

1984 2 215 

1985 1 191 



Total 34 2,281 



Table 31 .-Summary of nonfatal electrical accidents at the surface at underground metal-nonmetal mines 



25 



1980 



1981 



1982 



1983 



1984 



1985 



Total 



Activity when accident occurred: 

Maintain, repair electrical equipment . 

Handle supplies, material 

Maintain machine 

Caging 

Install and maintain ventilation 

Use powered handtools 

Idle 

Move equipment 

Operate surface equipment 

Source of injury: 

Electrical apparatus 

Acids, alkalies (wet cement) 

Conductors, cables, trolley poles .... 

Drill, rotary 

Movable ladders 

Surface mining machines 

Job title: 

Electrician 

Mechanic 

Tipple operator 

Stopping builder 

Electrical helper 

Maintenance foreman 

Mine foreman 

Drill operator 

Truck driver 

Laborer 

Boney operator 

Hoistman 

Carpenter 

Machine: 

Not recorded in MSHA data base .... 

Skip, elevator, cage 

Service truck, pickup, utility truck 
(not ore haulage) 

Nonpowered handtools 

Crane, derrick 

Machine, not elsewhere classified .... 

Pump 

Jumbo carriage-mounted drills on rails, 
tracks, tires 

Compressor 

Pneumatic blasting agent loader .... 

Fan 

Powered handtools 

Load-haul-dump, scoop tram, 

ram car, etc 

Nature of injury: 

Electrical arc burn 

Chemical burns 

Electrical shock (electrocution) 

Electrical burn (contact burn) 

Amputation 

Accident type: 

Rash burns, electric 

Electric shock 

Absorption of toxics 

Part of body: 

Multiple injuries 

Eyes 

Body systems 

Hand 

Face 

Upper extremities, multiple 

Fingers 

Neck 

Face, multiple parts 

Chest 



19 
6 
2 
2 



20 

7 
4 
1 
1 
1 

11 
8 
2 
2 
2 
2 



17 
3 

2 
2 
2 

1 
1 

1 
1 
1 
1 
1 



15 

7 
7 
4 

1 

15 
12 

7 

8 

7 
7 
4 
2 
2 
1 
1 
1 
1 



26 



Table 32.- Years of experience 1 at specific job when nonfatal accident occurred 
at the surface at underground metal-nonmetal mines 



Year 



0-5 



6-10 



11-15 



16-20 



Over 20 



Unknown 



1980 6 2 2 3 

1981 7 1 1 

1982 6 1 

1983 1 1 

1984 1 1 

1985 _0 1 

Total 20 4 3 1 2 4_ 

'Data do not represent total mining experience of employees, only experience at the specific 
job being performed when accident occurred. 



Table 33 -Times when electrical nonfatal accidents occurred at the 
surface at underground metal-nonmetal mines 

1980 1981 1982 1983 1984 1985 



Total 



11:01 a.m. to 1:01 p.m. 

1:01 to 3:01 p.m 

3:01 to 5:01 p.m 

5:01 to 7:01 p.m 

7:01 to 9:01 p.m 

9:01 to 11:01 p.m. . . . 
11:01 p.m. to 1:01 a.m. 

1:01 to 3:01 a.m 

3:01 to 5:01 a.m 

5:01 to 7:01 a.m 

7:01 to 9:01 a.m 

9:01 to 11:01 a.m. . . . 
Unknown 



5 


1 


1 








1 


2 


1 








1 





2 


1 


1 














2 














1 





1 
































1 








1 

































































3 


1 








2 


3 


1 


1 








1 


















NOTE.-From 1980 through 1985, 18 of 33 accidents occurred in the morning. In 1 case, the 
time was not listed and is shown as unknown. 



Table 34.-Total days lost per year as a result of nonfatal electrical accidents 
at the surface at underground metal-nonmetal mines 

Year Accidents Days lost 

1980 13 562 

1981 9 359 

1982 7 224 

1983 2 112 

1984 2 175 

1985 1 3_ 

Total 34 1,435 



27 



COST INFORMATION 



This section provides estimates of the costs of work- 
related injuries for 1980 through 1985 for the following 
four mining sectors: 

Underground coal mines 

Surface at underground coal mines 

Underground metal-nonmetal mines 



Surface at underground metal-nonmetal mines 

The cost information for each year for these m inin g 
sectors, including the costs of all fatalities, the costs of all 
nonfatal accidents, and the combined costs of fatal and 
nonfatal accidents are given in tables 35 through 58. 



Table 35.-Cost information relative to electrical accidents in underground coal mines, 1980 

Cost to- Element sum 

FATALITIES (10) 

Industry: 

State Worker Compensation benefits $990,526 

Postaccident production loss 794,181 

Primary medical treatment 

Union death or disability benefits 269,174 

Fatal accident investigation 10,844 

Total ^ . 2,064,725 

Family: Loss of wages 2,632,499 

Public sector: 

Federal Social Security benefits 2,423,543 

Fatal accident investigation 40,586 

Total 2,464,129 

Grand total 7,161,353 

NONFATAL ACCIDENTS (303) 

Industry: 

State Worker Compensation benefits $203,521 

Postaccident production loss 

Primary medical treatment 209,813 

Union death or disability benefits 8,520 

Fatal accident investigation 

Total 421,854 

Family: Loss of wages 129,560 

Public sector: 

Federal Social Security benefits 6,021 

Fatal accident investigation 

Total 6,021 

Grand total 557,435 

COMBINED FATAL AND NONFATAL ACCIDENTS (313) 

Industry: 

State Worker Compensation benefits $1,194,047 

Postaccident production loss 794,181 

Primary medical treatment 209,813 

Union death or disability benefits 277,694 

Fatal accident investigation 10,844 

Total 2,486,579 

Family: Loss of wages 2,762,059 

Public sector: 

Federal Social Security benefits 2,429,564 

Fatal accident investigation 40,586 

Total 2,470,150 

Grand total 7,718,788 



% of total 



13.8 
11.1 

.0 
3.8 

.2 



28.8 
36.8 

33.8 
.6 



34.4 



100.0 



36.5 
.0 

37.6 

1.5 

.0 



75.7 
23.2 

1.1 
.0 



1.1 



100.0 



13.8 

10.3 

2.7 

3.6 

.1 



32.2 
35.8 

31.5 
.5 



32.0 



100.0 



28 



Table 36.-Cost information relative to electrical accidents in underground coal mines, 1981 

Cost to- Element sum 

FATALITIES (8) 

Industry: 

State Worker Compensation benefits $559,914 

Postaccident production loss 2,469,647 

Primary medical treatment 

Union death or disability benefits 430,000 

Fatal accident investigation 10,901 

Total 3,470,462 

Family: Loss of wages 3,146,706 

Public sector: 

Federal Social Security benefits 1,759,078 

Fatal accident investigation 41,058 

Total 1,800,136 

Grand total 8,417,304 

NONFATAL ACCIDENTS (243) 

Industry: 

State Worker Compensation benefits $158,692 

Postaccident production loss 

Primary medical treatment 178,795 

Union death or disability benefits 8,581 

Fatal accident investigation 

Total 346,068 

Family: Loss of wages 149,280 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 557,435 ~ 

COMBINED FATAL AND NONFATAL ACCIDENTS (251) 

Industry: 

State Worker Compensation benefits $718,606 

Postaccident production loss 2,469,647 

Primary medical treatment 178,795 

Union death or disability benefits 438,581 

Fatal accident investigation 10,901 

Total 3,816,530 

Family: Loss of wages 3,195,986 

Public sector: 

Federal Social Security benefits 1,759,078 

Fatal accident investigation 41,058 

Total 1,800,136 

Grand total 8,912,652 



% of total 



6.7 
29.3 

.0 
5.1 

.1 



41.2 
37.4 

20.9 
.5 



21.4 



100.0 



32.0 
.0 

36.1 

1.8 

.0 



69.9 
30.1 

.0 
.0 



.0 



100.0 



8.1 

27.7 

2.0 

4.9 

.1 



42.8 
37.0 

19.7 
.5 



20.2 



100.0 



29 



Table 37.-Cost information relative to electrical accidents in underground coal mines, 1982 

Cost to- Element sum 

FATALITIES (4) 

Industry: 

State Worker Compensation benefits $488,951 

Postaccident production loss 1 ,033,751 

Primary medical treatment 

Union death or disability benefits , 230,133 

Fatal accident investigation 5,779 

Total 1,758,614 

Family: Loss of wages 1,361,826 

Public sector: 

Federal Social Security benefits 545,572 

Fatal accident investigation 19,256 

Total 564,828 

Grand total 3,685,268 ~ 

NONFATAL ACCIDENTS (240) 

Industry: 

State Worker Compensation benefits $199,713 

Postaccident production loss 

Primary medical treatment 142,31 1 

Union death or disability benefits 8,123 

Fatal accident investigation 

Total 350,147 

Family: Loss of wages 162,120 

Public sector: 

Federal Social Security benefits 12,266 

Fatal acclders* investigation 

Total 12,266 

Grand total 524,533 

COMBINED FATAL AND NONFATAL ACCIDENTS (244) 

Industry: 

State Worker Compensation benefits $688,664 

Postaccident production loss 1,033,751 

Primary medical treatment 142,31 1 

Union death or disability benefits 238,256 

Fatal accident investigation 5,779 

Total 2,108,761 

Family: Loss of wages 1 ,523,946 

Public sector: 

Federal Social Security benefits 557,838 

Fatal accident investigation 19,256 

Total 577,094 

Grand total 4,209,801 



% of total 



13.2 
28.1 

.0 
6.2 

.2 



47.7 
37.0 

14.8 
.5 



15.3 



100.0 



38.1 
.0 

27.1 

1.5 

.0 



66.8 
30.9 

2.3 
.0 



2.3 



100.0 



16.4 

24.6 

3.4 

5.7 

.1 



50.1 
36.2 

13.3 
.5 



13.7 



100.0 



30 



Table 38.-Cost information relative to electrical accidents in underground coal mines, 1983 

Cost to- Element sum 

FATALITIES (4) 
Industry: 

State Worker Compensation benefits $584,562 

Postaccident production loss 2,823,489 

Primary medical treatment 

Union death or disability benefits 215,000 

Fatal accident investigation 5,700 

Total 3,628,751 

Family: Loss of wages 1 ,052,688 

Public sector: 

Federal Social Security benefits 1,735,376 

Fatal accident investigation 20,585 

Total 1,755,961 

Grand total 6,437,400 

NONFATAL ACCIDENTS (120) 

Industry: 

State Worker Compensation benefits $132,415 

Postaccident production loss 

Primary medical treatment 104,730 

Union death or disability benefits 3,373 

Fatal accident investigation 

Total 240,518 

Family: Loss of wages 99,91 1 

Public sector: 

Federal Social Security benefits 22,162 

Fatal accident investigation 

Total 22,162 

Grand total 362,591 

COMBINED FATAL AND NONFATAL ACCIDENTS (124) 

Industry: 

State Worker Compensation benefits $716,977 

Postaccident production loss 2,823,489 

Primary medical treatment 104,730 

Union death or disability benefits 218,373 

Fatal accident investigation 5,700 

Total 3,869,269 

Family: Loss of wages 1,152,599 

Public sector: 

Federal Social Security benefits 1 ,757,538 

Fatal accident investigation 20,585 

Total 1 ,778,123 

Grand total 6,799,991 



% of total 



9.0 
43.9 

.0 
3.3 

.1 



56.3 
16.4 

27.0 
.3 



27.3 



100.0 



36.5 
.0 

28.9 
.9 
.0 



66.3 
27.6 

6.1 
.0 



6.1 



100.0 



56.9 

41.5 

1.5 

3.2 

.1 



56.9 
17.0 

25.8 
.3 



26.1 



100.0 



31 



Table 39.-Cost information relative to electrical accidents in underground coal mines, 1984 

Cost to- Element sum 

FATALITIES (3) 

Industry: 

State Worker Compensation benefits $346,684 

Postaccident production loss 696,053 

Primary medical treatment 

Union death or disability benefits 161,250 

Fatal accident investigation 4,188 

Total 1,208,175 

Family: Loss of wages 1,161,305 

Public sector: 

Federal Social Security benefits 1 ,340,422 

Fatal accident investigation 13,990 

Total 1,354,412 

Grand total 3,723,892 

NONFATAL ACCIDENTS (122) 

Industry: 

State Worker Compensation benefits $302,269 

Postaccident production loss 

Primary medical treatment 77,907 

Union death or disability benefits 2,441 

Fatal accident investigation 

Total 382,617 

Family: Loss of wages 197,953 

Public sector: 

Federal Social Security benefits 36,061 

Fatal accident investigation 

Total 36,061 

Grand total 616,631 

COMBINED FATAL AND NONFATAL ACCIDENTS (125) 

Industry: 

State Worker Compensation benefits $648,953 

Postaccident production loss 696,053 

Primary medical treatment 77,907 

Union death or disability benefits 163,691 

Fatal accident investigation 4,188 

Total 1 ,590,792 

Family: Loss of wages 1,359,258 

Public sector: 

Federal Social Security benefits 1 ,376,483 

Fatal accident investigation 13,990 

Total 1,390,473 

Grand total 4,340,523 



% of total 



9.3 
18.7 

.0 
4.3 

.1 



32.4 
31.2 

36.0 
.4 



36.4 



100.0 



49.1 
.0 

12.6 
.4 
.0 



62.1 
32.1 

5.8 
.0 



5.8 



100.0 



15.0 

16.0 

1.8 

3.8 

.1 



36.6 
31.3 

31.7 
.3 



32.0 



100.0 



32 



Table 40.-Cost information relative to electrical accidents in underground coal mines, 1985 

Cost to- Element sum 

FATALITIES (3) 
Industry: 

State Worker Compensation benefits $412,273 

Postaccident production loss 400,683 

Primary medical treatment 

Union death or disability benefits 193,500 

Fatal accident investigation 5,154 

Total 1,011,610 

Family: Loss of wages 1,122,732 

Public sector: 

Federal Social Security benefits 766,558 

Fatal accident investigation 19,287 

Total 785,845 

Grand total 2,920,187 

NONFATAL ACCIDENTS (118) 

Industry: 

State Worker Compensation benefits $127,450 

Postaccident production loss 

Primary medical treatment 90,476 

Union death or disability benefits 4,198 

Fatal accident investigation 

Total 222,124 

Family: Loss of wages 91,066 

Public sector: 

Federal Social Security benefits 10,452 

Fatal accident investigation 

Total 10,452 

Grand total 323,642 

COMBINED FATAL AND NONFATAL ACCIDENTS (121) 

Industry: 

State Worker Compensation benefits $539,723 

Postaccident production loss 400,683 

Primary medical treatment 90,476 

Union death or disability benefits 197,698 

Fatal accident investigation 5,154 

Total 1,233,734 

Family: Loss of wages 1,213,798 

Public sector: 

Federal Social Security benefits 777,010 

Fatal accident investigation 19,287 

Total 796,297 

Grand total 3,243,829 



% of total 



14.2 
13.7 

.0 
6.6 

.2 



34.7 
38.4 

26.3 
.7 



26.9 



100.0 



39.4 
.0 

28.0 

1.3 

.0 



68.6 
28.1 

3.2 

.0 



3.2 



100.0 



16.6 

12.4 

2.8 

6.1 

.2 



38.0 
37.4 

24.0 
.6 



24.5 



100.0 



Table 41 .-Cost information relative to electrical accidents 1 at the surface at underground coal mines, 1980 

Cost to- Element sum 

Industry: 

State Worker Compensation benefits $19,196 

Postaccident production loss 

Primary medical treatment 20,873 

Union death or disability benefits 721 

Fatal accident investigation 

Total 40,790 

Family: Loss of wages 21,929 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 62,719 ~ 

! 31 nonfatal accidents; no fatal accidents. 



% of total 



30.6 
.0 

33.3 

1.1 

.0 



65.0 
35.0 

.0 
.0 



.0 



100.0 



33 



Table 42.-Cost information relative to electrical accidents at the surface at underground coal mines, 1981 

Cost to- Element sum 

FATALITIES (1) 
Industry: 

State Worker Compensation benefits $149,088 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 53,750 

Fatal accident investigation 2,101 

Total 204,939 

Family: Loss of wages 161,495 

Public sector: 

Federal Social Security benefits 363,297 

Fatal accident investigation 5,153 

Total 368,450 

Grand total 734,884 

NONFATAL ACCIDENTS (27) 

Industry: 

State Worker Compensation benefits 19,197 

Postaccident production loss 

Primary medical treatment 9,056 

Union death or disability benefits 584 

Fatal accident investigation 

Total 28,837 

Family: Loss of wages 17,674 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 6 

Grand total 46,511 

COMBINED FATAL AND NONFATAL ACCIDENTS (28) 

Industry: 

State Worker Compensation benefits 168,285 

Postaccident production loss 

Primary medical treatment 9,056 

Union death or disability benefits 54,344 

Fatal accident investigation 2,101 

Total 233,776 

Family: Loss of wages 179,169 

Public sector: 

Federal Social Security benefits 363,297 

Fatal accident investigation 5,153 

Total 368,450 

Grand total 781,395 



% of total 



20.3 

.0 

.0 

7.3 

.3 



27.9 
22.0 

49.4 
.7 



50.1 



100.0 



62.0 
.0 

19.5 

1.3 

.0 



62.0 
38.0 

.0 
.0 



100.0 



21.5 

.0 

1.2 

7.0 

.3 



29.9 
22.9 

46.5 
.7 



47.2 



100.0 



34 



Table 43.-Cost information relative to electrical accidents at the surface at underground coal mines, 1982 

Cost to- Element sum 

FATALITIES (2) 

Industry: 

State Worker Compensation benefits $265,295 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 107,500 

Fatal accident investigation 3,598 

Total 376,393 

Family: Loss of wages 256,591 

Public sector: 

Federal Social Security benefits 620,009 

Fatal accident investigation 10,936 

Total 630,945 ~ 

Grand total 1 ,263,929 

NONFATAL ACCIDENTS (20) 

Industry: 

State Worker Compensation benefits 12,013 

Postaccident production loss 

Primary medical treatment 6,286 

Union death or disability benefits 632 

Fatal accident investigation 

Total 181)31 

Family: Loss of wages 11 ,678 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 30,609 

COMBINED FATAL AND NONFATAL ACCIDENTS (22) 

Industry: 

State Worker Compensation benefits 277,308 

Postaccident production loss 

Primary medical treatment 6,286 

Union death or disability benefits 108,132 

Fatal accident investigation 3,598 

Total 395,324 

Family: Loss of wages 268,269 

Public sector: 

Federal Social Security benefits 620,009 

Fatal accident investigation 10,936 

Total 630,945 

Grand total 1,294,538 



% of total 



21.0 

.0 

.0 

8.5 

.3 



29.8 
20.3 

49.1 
.8 



49.9 



100.0 



39.2 
.0 

20.5 

2.1 

.0 



61.8 
38.2 

.0 
.0 



.0 



100.0 



21.4 

.0 

.5 

8.4 

.3 



30.6 
20.7 

47.9 
.8 



48.7 



100.0 



35 



Table 44.-Cost information relative to electrical accidents at the surface at underground coal mines, 1983 

Cost to- Element sum 

FATALITIES (2) 
Industry: 

State Worker Compensation benefits $236,712 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 107,500 

Fatal accident investigation 2,439 

Total 346,651 

Family: Loss of wages 1,016,102 

Public sector: 

Federal Social Security benefits 217,679 

Fatal accident investigation 8,083 

Total 225,762 

Grand total 1,588,515 

NONFATAL ACCIDENTS (13) 

Industry: 

State Worker Compensation benefits 10,283 

Postaccident production loss 

Primary medical treatment 2,474 

Union death or disability benefits 354 

Fatal accident investigation 

Total 13,111 

Family: Loss of wages 9,592 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 6 

Grand total 22,703 

COMBINED FATAL AND NONFATAL ACCIDENTS (15) 

Industry: 

State Worker Compensation benefits 246,995 

Postaccident production loss 

Primary medical treatment 2,474 

Union death or disability benefits 107,854 

Fatal accident investigation 2,439 

Total 359,762 

Family: Loss of wages 1,025,694 

Public sector: 

Federal Social Security benefits 217,679 

Fatal accident investigation 8,083 

Total 225,762 

Grand total 1,611,218 



% of total 



14.9 

.0 

.0 

6.8 

.2 



21.8 
64.0 

13.7 
.5 



14.2 



100.0 



45.3 
.0 

10.9 

1.6 

.0 



57.8 
42.2 

.0 
.0 



100.0 



15.3 

.0 

.2 

6.7 

.2 



22.3 
63.7 

13.5 
.5 



14.0 



100.0 



36 



Table 45.-Cost information relative to electrical accidents at the surface at underground coal mines, 1984 

Cost to- Element sum 

FATALITIES (1) 

Industry: 

State Worker Compensation benefits $151,342 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 53,750 

Fatal accident investigation 2,158 

Total 207,250 

Family: Loss of wages 384,618 

Public sector: 

Federal Social Security benefits 194,568 

Fatal accident investigation 7,750 

Total 202,318 

Grand total 794,186 

NONFATAL ACCIDENTS (18) 

Industry: 

State Worker Compensation benefits 35,835 

Postaccident production loss 

Primary medical treatment 9,768 

Union death or disability benefits 921 

Fatal accident investigation 

Total 46,524 

Family: Loss of wages 19,602 

Public sector: 

Federal Social Security benefits 12,187 

Fatal accident investigation 

Total 12,187 

Grand total 78,313 

COMBINED FATAL AND NONFATAL ACCIDENTS (19) 

Industry: 

State Worker Compensation benefits 187,177 

Postaccident production loss 

Primary medical treatment 9,768 

Union death or disability benefits 54,671 

Fatal accident investigation 2,158 

Total 253,774 

Family: Loss of wages 404,220 

Public sector: 

Federal Social Security benefits 206,755 

Fatal accident investigation 7,750 

Total 214,505 

Grand total 872,499 



% of total 



19.1 

.0 

.0 

6.8 

.3 



26.1 
48.4 

24.5 
1.0 



25.5 



100.0 



45.8 
.0 

12.5 

1.2 

.0 



59.4 
25.0 

15.6 
.0 



15.6 



100.0 



21.5 

.0 

1.1 

6.3 

.2 



29.1 
46.3 

23.7 
.9 



24.6 



100.0 



37 



Table 46.-Cost information relative to electrical accidents at the surface at underground coal mines, 1985 

Cost to- Element sum 

FATALITIES (2) 
Industry: 

State Worker Compensation benefits $255,289 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 129,000 

Fatal accident investigation 2,906 

Total 387,195 

Family: Loss of wages 1,219,632 

Public sector: 

Federal Social Security benefits 143,343 

Fatal accident investigation 11,178 

Total 154,521 

Grand total 1,761,348 

NONFATAL ACCIDENTS (16) 

Industry: 

State Worker Compensation benefits 100,649 

Postaccident production loss 

Primary medical treatment 14,210 

Union death or disability benefits 210 

Fatal accident investigation 

Total 115,069 

Family: Loss of wages 71,662 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 186,731 

COMBINED FATAL AND NONFATAL ACCIDENTS (18) 

Industry: 

State Worker Compensation benefits 355,938 

Postaccident production loss 

Primary medical treatment 14,210 

Union death or disability benefits 129,210 

Fatal accident investigation 2,906 

Total 502,365 

Family: Loss of wages 1 ,291 ,294 

Public sector: 

Federal Social Security benefits 143,343 

Fatal accident investigation 11,178 

Total 154,521 

Grand total 1,948,079 



% of total 



14.5 

.0 

.0 

7.3 

.2 



22.0 
69.2 

8.2 
.6 



8.8 



100.0 



53.9 

.0 

7.6 

.1 

.0 



61.6 
38.4 

.0 
.0 



100.0 



18.3 

.0 

.7 

6.6 

.1 



25.8 
66.3 

7.4 
.6 



7.9 



100.0 



Table 47.-Cost information relative to electrical accidents 1 in underground metal-nonmetal mines, 1980 

Cost to- Element sum 
Industry: 

State Worker Compensation benefits $7,624 

Postaccident production loss 

Primary medical treatment 31,851 

Union death or disability benefits 632 

Fatal accident investigation 

Total 40,107 

Family: Loss of wages 11 ,586 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 51 ,693 

'26 nonfatal accidents; no fatal accidents. 



% of total 



30.6 
.0 

61.6 

1.2 

.0 



77.6 
22.4 

.0 
.0 



100.0 



38 



Table 48.-Cost information relative to electrical accidents in underground metal-nonmetal mines, 1981 

Cost to- Element sum 

FATALITIES (1) 

Industry: 

State Worker Compensation benefits $0 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 53,750 

Fatal accident investigation 1,881 

Total 55,631 

Family: Loss of wages 690,152 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 5,744 

Total 5,744 

Grand total 751 ,527 

NONFATAL ACCIDENTS (31) 

Industry: 

State Worker Compensation benefits 23,359 

Postaccident production loss 

Primary medical treatment 7,258 

Union death or disability benefits 708 

Fatal accident investigation 

Total 31,325 

Family: Loss of wages 23,152 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 54,477 

COMBINED FATAL AND NONFATAL ACCIDENTS (32) 

Industry: 

State Worker Compensation benefits 23,359 

Postaccident production loss 

Primary medical treatment 7,258 

Union death or disability benefits 54,458 

Fatal accident investigation 1,881 

Total 86,956 

Family: Loss of wages 713,304 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 5,744 

Total 5,744 

Grand total 806,004 



% of total 



.0 
.0 
.0 
7.2 
.2 



7.4 
91.8 

.0 
.8 



0.8 



100.0 



57.5 
.0 

13.3 

1.3 

.0 



57.5 
42.5 

.0 
.0 



.0 



100.0 



2.9 
.0 
.9 

6.8 
.2 



10.8 
88.5 

.0 
.7 



7.9 



100.0 



Table 49.-Cost information relative to electrical accidents 1 in underground metal-nonmetal mines, 1982 

Cost to- Element sum 
Industry: 

State Worker Compensation benefits $13,001 

Postaccident production loss 

Primary medical treatment 8,857 

Union death or disability benefits 38 

Fatal accident investigation 

Total 21,896 

Family: Loss of wages 13,077 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 34,973 

11 nonfatal accidents; no fatal accidents. 



% of total 



37.2 
.0 

25.3 
.1 
.0 



62.6 
37.4 

.0 
.0 



100.0 



39 



Table 50.-Cost information relative to electrical accidents in underground metal-nonmetal mines, 1983 

Cost to- Element sum 

FATALITIES (1) 
Industry: 

State Worker Compensation benefits $89,333 

Postaccident production loss 

Primary medical treatment 

Union death or disability benefits 53,750 

Fatal accident investigation 1,130 

Total 144,213 

Family: Loss of wages 304,573 

Public sector: 

Federal Social Security benefits 398,346 

Fatal accident investigation 4,161 

Total 402,507 

Grand total 851,293 

NONFATAL ACCIDENTS (7) 

Industry: 

State Worker Compensation benefits 1,181 

Postaccident production loss 

Primary medical treatment 9,008 

Union death or disability benefits 460 

Fatal accident investigation (5 

Total 10,649 

Family: Loss of wages 3,288 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 6 

Grand total 13,937 

COMBINED FATAL AND NONFATAL ACCIDENTS (8) 

Industry: 

State Worker Compensation benefits 90,514 

Postaccident production loss 

Primary medical treatment 9,008 

Union death or disability benefits 54,210 

Fatal accident investigation 1,130 

Total 154,862 

Family: Loss of wages 307,861 

Public sector: 

Federal Social Security benefits 398,346 

Fatal accident investigation 4,161 

Total 402,507 

Grand total 865,230 



% of total 



10.5 

.0 

.0 

6.3 

.1 



16.9 
35.8 

46.8 
.5 



47.3 



100.0 



8.5 

.0 

64.6 

3.3 
.0 



76.4 
23.6 

.0 
.0 



100.0 



10.5 

.0 

1.0 

6.3 

.1 



17.9 
35.6 

46.0 
.5 



46.5 



100.0 



40 



Table 51 .-Cost information relative to electrical accidents 1 in underground metal-nonmetal mines, 1 984 

Cost to- Element sum 

Industry: 

State Worker Compensation benefits $3,920 

Postaccident production loss 

Primary medical treatment 4,095 

Union death or disability benefits 248 

Fatal accident investigation 

Total 8,263 

Family: Loss of wages 3,598 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation CD 

Total 

Grand total 11,861 

: 11 nonfatal accidents; no fatal accidents. 



% of total 



33.0 
.0 

34.5 

2.1 

.0 



69.7 
30.3 

.0 
.0 



.0 



100.0 



Table 52.-Cost information relative to electrical accidents 1 in underground metal-nonmetal mines, 1 985 

Cost to- Element sum 

Industry: 

State Worker Compensation benefits $18,145 

Postaccident production loss 

Primary medical treatment 6,938 

Union death or disability benefits 42 

Fatal accident investigation 

Total 25,125 

Family: Loss of wages 9,231 

Public sector: 

Federal Social Security benefits 

Fatal accident investigation 

Total 

Grand total 34,356 ~ 

l 5 nonfatal accidents; no fatal accidents. 



% of total 



52.8 
.0 

20.2 
.1 
.0 



73.1 
26.9 

.0 
.0 



.0 



100.0 



Table 53.-Cost information relative to electrical accidents 1 at the surface at underground metal-nonmetal mines, 1 980 

Cost to- Element sum % of total 

Industry: 

State Worker Compensation benefits $36,428 64.1 

Postaccident production loss .0 

Primary medical treatment 10,142 17.9 

Union death or disability benefits 150 .3 

Fatal accident investigation (3 .0 

Total 46,720 82.3 

Family: Loss of wages 10,069 17.7 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total .0 

Grand total 56,789 100.0 ~ 

1 13 nonfatal accidents; no fatal accidents. 



41 



Table 54.-Cost information relative to electrical accidents 1 at the surface at underground metal-nonmetal mines, 1981 

Cost to- Element sum % of total 
Industry: 

State Worker Compensation benefits $20,207 54.0 

Postaccident production loss .0 

Primary medical treatment 1,643 4.4 

Union death or disability benefits 319 .9 

Fatal accident investigation .0 

Total 22,169 59.3 

Family: Loss of wages 15,240 40.7 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total .0 

Grand total 37,409 100.0~ 

*9 nonfatal accidents; no fatal accidents. 



Table 55-Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 1982 

Cost to- Element sum % of total 

FATALITIES (1) 

Industry: 

State Worker Compensation benefits $75,146 8.5 

Postaccident production loss .0 

Primary medical treatment .0 

Union death or disability benefits 53,750 6.1 

Fatal accident investigation 1,609 .2 

Total 130,505 t4l3 

Family: Loss of wages 745,075 84.7 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation 3,864 .4 

Total 3,864 A 

Grand total 879,444 100.0~ 

NONFATAL ACCIDENTS (7) 

Industry: 

State Worker Compensation benefits 14,973 55.9 

Postaccident production loss .0 

Primary medical treatment 2,200 8.2 

Union death or disability benefits 226 .8 

Fatal accident investigation .0 

Total 17,399 64.9 

Family: Loss of wages 9,422 35.1 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total .0 

Grand total 26,821 100.0 

COMBINED FATAL AND NONFATAL ACCIDENTS (8) 

Industry: 

State Worker Compensation benefits 90,119 9.9 

Postaccident production loss .0 

Primary medical treatment 2,200 .2 

Union death or disability benefits 53,976 6.0 

Fatal accident investigation 1 ,609 .2 

Total 147,904 16\3 

Family: Loss of wages 754,497 83.3 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation 3,864 .4 

Total 3,864 A 

Grand total 906,265 100.0 



42 



Table 56.-Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 1 983 

Cost to- Element sum % of total 

FATALITIES (1) 

Industry: 

State Worker Compensation benefits $112,047 13.1 

Postaccident production loss .0 

Primary medical treatment .0 

Union death or disability benefits 53,750 6.3 

Fatal accident investigation 2,049 .2 

Total 167,846 19.6 

Family: Loss of wages 216,947 25.3 

Public sector: 

Federal Social Security benefits 465,231 54.3 

Fatal accident investigation 6,392 .8 

Total 471 ,623 55.1 

Grand total 856,416 100.0 ~ 

NONFATAL ACCIDENTS (2) 

Industry: 

State Worker Compensation benefits 3,275 23.3 

Postaccident production loss .0 

Primary medical treatment 1 ,067 7.6 

Union death or disability benefits 698 5.0 

Fatal accident investigation .0 

Total 5,040 35.9 

Family: Loss of wages 9,007 64.1 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total 6 iO - 

Grand total 14,047 100.0 ~ 

COMBINED FATAL AND NONFATAL ACCIDENTS (3) 

Industry: 

State Worker Compensation benefits 115,322 13.2 

Postaccident production loss .0 

Primary medical treatment 1 ,067 7.6 

Union death or disability benefits 54,448 6.3 

Fatal accident investigation 2,049 .2 

Total 172,886 19.9 

Family: Loss of wages 225,954 26.0 

Public sector: 

Federal Social Security benefits 465,231 53.4 

Fatal accident investigation 6,392 .6 

Total 471,623 54.1 

Grand total 870,463 ~~ 100.0 



43 



Table 57.-Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 1984 

Cost to- Element sum % of total 

FATALITIES (2) 

Industry: 

State Worker Compensation benefits $162,508 15.5 

Postaccident production loss .0 

Primary medical treatment .0 

Union death or disability benefits 53,750 5.1 

Fatal accident investigation 1,545 .1 

Total 217,803 20.7 

Family: Loss of wages 145,969 13.9 

Public sector: 

Federal Social Security benefits 680,158 64.9 

Fatal accident investigation 3,531 .5 

Total 683,689 65.4 

Grand total 1,047,461 100.0 

NONFATAL ACCIDENTS (2) 

Industry: 

State Worker Compensation benefits 22,721 89.7 

Postaccident production loss .0 

Primary medical treatment 2,063 8.1 

Union death or disability benefits 177 .7 

Fatal accident investigation .0 

Total 24,961 98.5 

Family: Loss of wages 380 1.5 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total " 6 !6 

Grand total 25,341 100.0~ 

COMBINED FATAL AND NONFATAL ACCIDENTS (4) 

Industry: 

State Worker Compensation benefits 185,229 17.3 

Postaccident production loss .0 

Primary medical treatment 2,063 .2 

Union death or disability benefits • 53,927 5.0 

Fatal accident investigation 1,545 .2 

Total 242,764 22.7 

Family: Loss of wages 146,349 13.6 

Public sector: 

Federal Social Security benefits 680,158 63.4 

Fatal accident investigation 3,531 .3 

Total 683,689 63.7 

Grand total 1,072,802 100.0 



44 



Table 58.-Cost information relative to electrical accidents at the surface at underground metal-nonmetal mines, 1985 

Cost to- Element sum % of total 

FATALITIES (1) 

Industry: 

State Worker Compensation benefits $90,972 56.2 

Postaccident production loss .0 

Primary medical treatment .0 

Union death or disability benefits 64,500 39.9 

Fatal accident investigation 1,241 .8 

Total 156,713 961J 

Family: Loss of wages .0 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation 5,065 3.1 

Total 5,065 3U 

Grand total 161,778 100.0 

NONFATAL ACCIDENTS (1) 

Industry: 

State Worker Compensation benefits .0 

Postaccident production loss .0 

Primary medical treatment 398 51.6 

Union death or disability benefits 126 16.3 

Fatal accident investigation .0 

Total 524 68l) 

Family: Loss of wages 247 32.0 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation .0 

Total X) 

Grand total 771 100.0 ~ 

COMBINED FATAL AND NONFATAL ACCIDENTS (2) 

Industry: 

State Worker Compensation benefits 90,972 56.0 

Postaccident production loss .0 

Primary medical treatment 398 .2 

Union death or disability benefits 64,626 39.8 

Fatal accident investigation 1,241 .8 

Total 157,237 96.7 

Family: Loss of wages 247 .2 

Public sector: 

Federal Social Security benefits .0 

Fatal accident investigation 5,065 3.1 

Total 5,065 3.1 

Grand total 162,549 100.0 



45 



CONCLUSIONS 



The most common activities resulting in an electrical 
injury in all four mining sectors investigated are electrical 
repair and maintenance. Electricians and mechanics suf- 
fered the most injuries with the part of the body most 
affected being the hand or body systems 3 in the case of 
nonfatal injuries, and electrocutions being the cause of all 
fatal injuries. For all four mining sectors combined, the 
average age of fatal accident victims was 35 and the aver- 
age age of nonfatal accident victims was 36. 

Of the 1,142 fatal and nonfatal accidents analyzed, 63% 
of the victims had to 5 years of experience at the specific 
job they were performing when the accident occurred. 
One means of reducing electrical accidents may involve 
more frequent, more extensive training for employees with 
this level of experience. 

Some safety experts believe that the single most im- 
portant technique for bringing about safe worker behavior 
is training. Formal safety training programs play a vital 
role in many companies in a wide range of U.S. industries. 
Firms that continue safety efforts in a systematic and thor- 
ough fashion have been rewarded with substantial reduc- 
tions in lost hours of work. The money saved usually more 
than justifies the cost of the safety training programs (3). 

Successful training programs focus on two interrelated 
phases: (1) knowledge of safe operating procedures and 
(2) a positive attitude toward safety. Employees may be 
trained in the proper method of performing electrical 
repair and maintenance on a piece of equipment; however, 
if their attitude toward safety is negative, this knowledge 
may not prevent them from becoming involved in a poten- 
tially fatal accident. On the other hand, if employees are 
not properly trained in performing their specific job func- 
tion, a positive attitude toward safety may still not prevent 
an accident from occurring. 

Whatever techniques are employed, active management 
support of safety is a key dimension in the success of any 
safety program. Unless employees perceive that the orga- 
nizational climate is highly supportive of safety on the job, 
the most sophisticated safety program will not be maxi- 
mally effective. Management at all levels of supervision 



HThe body system classification applies when the function of the 
entire body has been affected, without specific injury to any other part. 
It does not apply when the system damage results from an external 
injury affecting an external part such as a back injury that includes 
damage to the nerves of the spinal cord. 



must demonstrate that safety is a responsibility that every- 
one must actively share. Employees should maintain a 
continuing interest and constant awareness of the impor- 
tance of following safe working practices. 

Some guidelines and recommendations that have been 
suggested from various sources as possible means of re- 
ducing electrical fatalities include the following: 

1. Frequent electrical safety presentations explaining 
the hazards of working on energized equipment (4). 

2. Annual refresher training (4). 

3. Warning posters and stickers relating to specific 
problems (4). 

4. Implementation of a program to ensure that only 
well-trained and knowledgeable personnel involved in 
electrical repair and maintenance are performing electrical 
work (4). 

5. Close inspection of trailing cables at the beginning 
of each shift (5). 

6. Use of cable handling devices and protective gloves 
when appropriate (5). 

7. Use of shielded low- voltage trailing cables to prevent 
shock exposure when handling trailing cables and splices 
by confining the shock hazard within the cable jacket (5). 

8. Use of ground-fault circuit interrupters that will shut 
off the current before a serious shock occurs (6). 

9. Use of the most appropriate tool for the job being 
performed (6). 

10. Provision of adequate clearance in the working 
quarters to prevent worker fatigue (<5). 

11. Use of portable, stepdown transformers in certain 
locations so that a low voltage (6, 12, 24, or 32 volts) 
electrical system may be installed (<5). 

12. Use of insulating platforms, rubber mats, and 
rubber gloves when tools are being used in wet locations 
(6). 

13. Proper use of double-insulated tools and three-wire 
tools (6). 

14. Regular tool inspection (<5). 

15. Clean power tools regularly (6). 

16. Eliminate overhead lines (7). 

17. Limit access or raise overhead lines (7). 

18. Provide cardiopulmonary resuscitation (CPR) 
training (7). 

19. Insist on adherence to safe working procedures by 
first-line supervisors (3). 



46 



REFERENCES 



1. Di Canio, D. G. Analysis of Economic Impact of Fatal/Nonfatal 
Accidents in Surface Coal and Metal/Nonmetal Mines (contract 
J01 13005, SRI Int.). BuMines OFR 206-84, 1983, 145 pp.; NTIS PB 85- 
145787. 

2. . Accident Cost Indicator Model Reference and User 

Manual (contract J01 13005, SRI Int.). BuMines OFR 207-84, 1983, 
148 pp.; NTIS PB 85-145795. 

3. Cohen, A., M. J. Smith, and W. K. Anger. Self-Protective 
Measures Against Workplace Hazards. J. Saf. Res., v. 11, 1979, pp. 121- 
131. 

4. Hall, P. M. An Electrical Fatality Prevention Program for the 
Coal Mining Industry. Paper in Proceedings of The Seventh WVU 



Mining Electrotechnology Conference, West Virginia University, July 24- 
27, 1984, pp. 231-243. 

5. Reynolds, R. L. History of Coal Mine Electrical Fatalities Since 
1970. Paper in Proceedings of The Seventh WVU Mining 
Electrotechnology Conference, West Virginia University, July 24-27, 
1984, pp. 213-230. 

6. Lahey, J. Electrically Safe Tools, Choosing and Using Them. 
Natl. Saf. News, July 1980, pp. 45^6. 

7. Yenchek, M. R. The Bureau of Mines Shock Prevention 
Research Program, An Overview. Paper in Proceedings of The Seventh 
WVU Mining Electrotechnology Conference, West Virginia University, 
July 24-27, 1984, pp. 244-256. 



BIBLIOGRAPHY 



Bowers, E. T. Using ADA (Accident Data Analysis) in Mine Safety 
Research. BuMines OFR 72-86, 1986, 111 pp. 

Schultz, D. P., and S. E. Schultz. Psychology and Industry Today. 
Macmillan, 4th ed., 1986, pp. 462^64. 



Zohar, D. Safety Climate in Industrial Organizations: Theoretical 
and Applied Implications. J. Appl. Psychol., No. 65, 1980, pp. 96-102. 



47 



APPENDIX A.-DESCRIPTION OF INFORMATION CATEGORIES AND DEFINITION 
OF NONFATAL ACCIDENTS AS USED IN THIS REPORT 



INFORMATION CATEGORIES 



Category 

Activity engaged in when 
accident occurred. 

Source of injury 

Job title 

Mining method 

Location 

Machine 

Nature of injury 

Accident type 

Part of body 



Description 

Specific activity at time of injury. 

The item that directly inflicted injury. 

The individual's occupation. 

The mining method being used. 

The specific location of accident. 

The machine (equipment), if listed, involved 

in accident. 
The injury in terms of its principle 

physical characteristics. 
The event that resulted in injury. 
Identifies part of body injured in accident. 



NONFATAL ACCIDENTS 

Nonfatal accidents, as defined in this report, include accidents resulting in the following: 

Permanent total or permanent partial disability. 

Days away from work only. 

Days away from work and days of restricted activity. 

Days of restricted work activity only. 

Injuries that do not result in death, nor days away from work, nor days of restricted work activity. 



48 



APPENDIX B.-VISUAL REPRESENTATIONS OF INFORMATION 



The following figures present data contained in the 
tables in the main text concerning fatal and nonfatal elec- 
trical accidents in mining for the 1980-85 period. For 
those information categories with extensive detail only data 
for the first 10 entries are included. The following is a 
breakdown of the information presented in the figures. 

Figure B-l (table 2) .-Fatal electrical accidents in un- 
derground coal mines, by activity engaged in when accident 
occurred, by source of injury, by job title, by mining meth- 
od, by location, and by machine. 

Figure B-2 (table 6) -Nonfatal electrical accidents in 
underground coal mines, by activity engaged in when acci- 
dent occurred, by source of injury, by job title, by mining 
method, by location, by nature of injury, by accident type, 
and by part of body. 

Figure B-3 (table ll).-Fatal electrical accidents at the 
surface at underground coal mines, by activity engaged in 



when fatality occurred, by source of injury, by job title, and 
by machine. 

Figure B-4 (table 15) -Nonfatal electrical accidents at 
the surface at underground coal mines, by activity engaged 
in when accident occurred, by source of injury, by job title, 
by machine, by nature of injury, by accident type, and by 
part of body. 

Figure B-5 (table 22) -Nonfatal electrical accidents in 
underground metal-nonmetal mines, by activity engaged in 
when accident occurred, by source of injury, by job title, by 
machine, by nature of injury, by part of body, by source of 
injury, and by job title. 

Figure B-6 (table 31). -Nonfatal electrical accidents at 
the surface at underground metal-nonmetal mines, by 
activity engaged in when accident occurred, by source of 
injury, by job title, by machine, by nature of injury, by 
accident type, and by part of body. 



49 



20" 
18" 
16-- 
14" 



Ld 

Q 12+ 






o 
a: 

Ld 



10- 



8- 



6- 



4" 



2-- 



13 



2 2 



1111111 



KEY 



I I Maintain, repair 

electrical equipment 



' ] Handle supplies, material 
Y////\ Moue power cable 
^\>c\\] Rerail equipment 
I | Inspect machinery 
&%£/$[ Drill face, rib, side 
Ualk, run 



I I I I II Bolt roof 

| Operate rock dust machine 
ti=%fi|%!%g| Operate shuttle car 



Figure B-1 .-Fatal electrical accidents in underground coal mines, 1 980-85. Activity engaged in when accident occurred. 



Ld 
Q 
h-l 
O 
U 



a: 

Ld 



14t 



12-- 



10- 



G-- 



13 



12 




KEY 



I | Electrical apparatus 

I I I I I I Conductors, cables, trolley poles 

Y////A Transformers, converters 

IvSSSSl Underground mining machines 

I I Mine jeep, jitney 



Figure B-1. -Fatal electrical accidents in underground coal mines, 1980-85-Continued. Source of injury. 



50 



Ld 
Q 
l-l 
(_> 
O 



LU 




KEY 
I 1 Electrician 



I I I I 1 1 Laborer,, muck machine 
operator 



Y////\ Maintenance foreman 
k^^j Roof bolter 
I | Mechanic 

Labor foreman 

Mine foreman 



I I I I II Blaster 

^| Dn ill operator 

£Pf5%1 Motorman 



Figure B-1 .-Fatal electrical accidents in underground coal mines, 1 980-85-Continued. Job title. 




KEY 
I I Continuous 

I I I I 1 1 Conuent ional-stope 

V///A Not defined 

£\^3 Longuall 



Figure B-1 .-Fatal electrical accidents in underground coal mines, 1 980-85-Continued. Mining method. 



51 



en 



Ld 
Q 
1-1 
<_> 
<_> 

<x 



Ld 

CD 



14t 



12- 



10- 



6-- 



4" 



2-- 



13 



11 




KEY 
Face 



rrrrri other 

X////A Intersection 
KSS>Nl Not defined 



Figure B-1. -Fatal electrical accidents in underground coal mines, 1 980-85-Continued. Location. 



en 

H 

z: 

UJ 
Q 

o 

a: 



o 

Ld 
00 



14t 



12-- 



10-- 



8- 



6-- 



4" 



KEY 



12 




Unknown 



I I I I II Roof bolter 

\////A Continuous miner, tunnel borer 

RsN^l Shuttle car 

I | Pump 



KR^&j Man trip, man car, jeep, 
personnel carrier, etc. 



EOQ^ Cutting machine (mining only),. 
chain cutter 



I I I I 1 1 Rock drill, jack leg, jackhammer, 
drifter, etc. 

| Mine car, nipper truck, timber, 
truck (underground only) 

frf&^&j Rock duster 



Figure B-1 .-Fatal electrical accidents in underground coal mines, 1 980-85-Continued. Machine. 



52 



tn 



500 

450+4 33 
400 
350 



LU 

q 300 

<-> 
cr 

250- - 



£ 200- 



150- 
100- 
50" 



128 



85 



v/k± 



69 




60 



^ 3 - 5 . 35 ,30 gg 



KEY 



I I Maintain, repair 

electrical equipment 



I I I I 1 1 Handle supplies, material 
Y////\ Maintain machine 
PSSS>\l Moue power cable 
I | Rerail equipment 

Operate locomotiue 



^Hjj Operate,, ride man trip 

I I I I 1 1 Inspect machinery 

^| Use handtools 

t£%$£$| Escaping a hazard 



Figure B-2.-Nonfatal electrical accidents in underground coal mines, 1980-85. Activity engaged in when accident 
occurred. 



en 

h- 
r 

Ld 
Q 
y-t 



O 

UJ 

cn 



550-- 
500-- 
450-- 
400-- 
350 
300 
250-- 
200-- 
150" 
100" 
50- 



KEY 



478 



466 




I | Electrical apparatus 



I I I I 1 1 Conductors, cables, trolley 
po les 



X////\ Flame, fire, smoke 
IvSS^^nI Transformers, converters 
I I Floor, bottom 
|%^$^ Underground mining machines 
Mine jeep, jitney 



I I I I 1 1 Acids, alkalies (uet cement) 

~| Underground narrow-gage 
rai lcars 

l^gaSjtfi Posts, caps, timbers 



Figure B-2.-Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Source of injury. 



53 



CO 



Ld 
Q 
I— I 
U 

a: 



LlI 
CD 



240-- 

220 

200-- 

188" 

168" 

148- 

128- 

188- 

88" 

68" 

48-- 

28-- 



214 



284 




KEY 
Mechan ic 



!JJ E lectr ic ian 



Y////X Laborer, muck 

machine operator 



E>NSS^ Motorman 

I | Shuttle car operator 

K&S&Sl Roof bolter 

^"m"^ Labor foreman 

I I I I 1 1 Maintenance foreman 

I Continuous miner operator 

t£g§ig&al Continuous miner helper 



Figure B-2. -Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Job title. 



CO 

z: 

UJ 
Q 
l-t 
U 

<x 



ui 



700T 



608-- 



508-- 



488-- 



300-- 



200-- 



188- 



653 



295 



126 




KEY 
~\ Continuous 



I | | | H Not defined 
Y////\ Conuent ional-Stope 
E^3 Longuall 
I I Other 

Shortwa 1 1 



W^^ Hand 



0- 
Figure B-2.-Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Mining method. 



54 



550t 

500 



-- 433 



z: 

Ld 
Q 
l-l 

<_> 

<r 



Ld 
00 



450-- 



400-- 



350-- 



300-- 



£50-- 



200- 



150" 



100" 



50-- 



220 



KEY 
I | Other 

rrrrn Face 




V///A Not defined 
b\\S^\S Intersection 
I I Shop 

Uertical shaft 



JQ^ Inclined shaft 



Figure B-2.- Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Location. 



700T 



LD 



Ld 
O 
l-H 
<_> 
O 

<r 



o 






600-- 



500-- 



400-- 



300-- 



200-- 



100- 



613 



221 



157 



,32 ?? P7 



KEY 



| | Electrical arc burn 



MiM] Electrical burn 
(contact burn) 



X////X Electrical shock 
Ce lectrocut ion ) 



ESXS>\I Burn or scald (heat) 
| I Multiple injuries 
Asphyx ia 



^^fl| Bruise 
| | Sprain, strain 
| Chemical burns 
WM£M Laceration, cut, puncture 



Figure B-2.-Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Nature of injury. 



55 



700T 



co 

h- 
z: 

Ld 
O 
I— I 

<_> 

<r 



o 

Ld 



680-- 



500- 



400-- 



3B0-- 



200-- 



180" 



624 



378 



[ 



wzzx 



KEY 
Flash burns, electric 

Electric current 

Contact with hot substance 

Inhalation of toxics 

Fall from machine 

Struck against 

stationary object 

b^w"d Absorption of toxics 

| | | [ 1 1 Struck , not elsewhere 
c lass if ied 

| Struck by flying object 

Pe^sj Struck against mouing object 



E^^IUL 7 s s 



Figure B-2.- Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Accident type. 



CO 



LU 
Q 

n 
u 

<r 



Ld 



400 T 



350 



300-- 



250 



208-- 



158-- 



188-- 



58-- 




KEY 



| | Hand 

[; I ! J ] Body systems 



Y////X Multiple injuries 
E^ Eyes 
I | F ingers 



E*/<$<5<^ Upper extremities, 
mu 1 1 i p 1 e 



HH3 Urist 
r^Leg 
I Arm 



\&M($ik Face, multiple parts 



Figure B-2.- Nonfatal electrical accidents in underground coal mines, 1980-85-Continued. Part of body. 



56 



6t 



5" 



r 

Ixl 
Q 
t-H 
<_> 
<_> 
<X 

3+ 



LU 

m 

z: 



a-- 




KEY 



I 1 Maintain, repair 

electrical equipment 



Mill] Handle supplies, material 

X////X Maintain machine 

R^^nSSI Getting on-off equipment 



Figure B-3. -Fatal electrical accidents at the surface at underground coal mines, 1980-85. Activity engaged in when 
fatality occurred. 



o 

l-H 

o 



(V 

UJ 



5" 



4- 



3- 




KEY 



I | Electrical apparatus 



j i | |] Conductors, cables, trolley 
poles 

Y////X Transformers, converters 



Figure B-3.- Fatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Source 
of injury. 



57 



6t 



5" 



<s> 



u 

Q 
l-H 

u 
a 



Ld 



3" 




KEY 

I I Electrician 

I I I I II Mechanic 

V///A Master electrician 

KSSSS1 Mine foreman 

I I Truck driuer 

Rff*!%&j Tipple operator 



Figure B-3.- Fatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Job title. 



en 

i- 
z: 

Ld 
O 
l-H 

u 
<_> 
<r 



Ld 
CD 




KEY 



I | Not recorded in 
MSHA database 



I I I I 1 1 Machine, not elsewhere 
classified 

^Fan 



RsSSSI Ore haulage truck, 
of f -highway 



Figure B-3.- Fatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Machine. 



58 



UJ 
Q 
I— I 

o 
<x 



80t 



70-- 69 



60- 



50-- 



40 



o 
ct: 

UJ 

30+ 



20-- 



10-- 



KEY 



I | Maintain, repair 

electrical equipment 



[ 



Maintain machine 



Y////\ Handle supplies, material 
[cvnSS^I Use handtools 
[ | Rerail equipment 

Operate locomotiue 




^"■"^ Inspect machinery 
I I I I 1 1 Moue power cable 

| Operate surface equipment 
jj&li Idle 



Figure B-4.- Nonfatal electrical accidents at the surface at underground coal mines, 1980-85. Activity engaged in 
when accident occurred. 



<s> 



UJ 
Q 
I— I 

u 

o 



Q_ 
UJ 



70T 



60-- 



58- 



40 



30-- 



20- - 



67 



24 



KEY 
Electrical apparatus 



Mill] Conductors, cables, trolley 
poles 



Y////X Acids, alkalies (wet cement) 

RS^vNJ Ground (surface) 

| | Flame, fire, smoke 

P$<$$<$i Transformers, conuerters 



Underground narrow-gage 
ra i lcars 




FFFffl Motors 

| | Mine jeep, jitney 

l&ff§&1 Metal (pipe, wire, nails, etc.) 



Figure B-4. 
of Injury. 



-Nonfatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Source 



59 



35t 




KEY 
I | Mechanic 
fj I j ']] Electrician 



V777A Laborer 
RSSS^SM Maintenance foreman 
Mine foreman 



RR£$^ Motorman 

lB M »"d Unknown 

I I I I 1 1 Shuttle car operator 

[ | Superintendent 

IftWS;^ Master electrician 



Figure B-4.- Nonfatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Job title. 



IS) 

\- 
7L 
UJ 
Q 

U 
(_> 



70T 



60-- 



50- 



40- 



KEY 



o 

K 30+ 

UJ 

CO 



20- 



10-- 



62 



15 



10 



7 



aka 



3 3 3 



a8& 



I | Not recorded in MSHfi database 

I I I I 1 1 Locomotiue, rai 1 -mounted; 
lorry car 

X////A Nonpowered handtools 



Man trip, man car, jeep, 
personnel carrier, etc, 



I I Conueyor, all types; belt feeder 
Machine, not elsewhere classified 



Wm~d Front -end loader , tractor -shoue 1, 
highlift, skip-loader, etc. 



I I I I 1 1 Load -haul -dump, scoop, tram, 
ramcar, etc. 

! | welder 

\0M#M Powered handtools 



Figure B-4.- Nonfatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Machine. 



60 



en 



o 
a: 



ex. 

Ld 



70T 



60" 



50" 



40- 



30-- 



20- 



10- 



63 



21 



14 



6 6 



■ 



4 4 




1 1 



KEY 



I | Electrical arc burn 

I I I I 1 1 Electrical burn 
(contact burn) 



Y///A Electrical shock 
(e lectrocut ion ) 



lv\ s \\SJ Chemical burns 

Burn or scald (heat) 
Multiple injuries 



b*B M d Laceration, cut, puncture 
| | | | 1 1 Sprain, strain 

| Bruise 
K^MH Poisoning 



Figure B-4.-Nonfatal electrical accidents at the surface at underground coal mines, 1 980-85-Continued. Nature of 
injury. 



CO 

\- 
z: 

Ld 
Q 
1—1 
<_> 

<r 



70t 



60" 



50" 



40- 



KEY 



o 

a. 30+ 

Ld 

e: 



20" 



10-- 



61 



37 



6 6 




I | Flash burns, electric 

EMMI Electric current 
V///A Absorption of toxics 



KSSSSl Contact with 

hot substance 



I | Struck against 

stationary object 



I&&&H Fall from ladder 

BS!3 Struck by flying object 

| | | | 1 1 Fall from machine 

| Caught in, under, or 

between a mouing and a 
stationary object 

l^lfc&ffi Fall to working surface 



Figure B-4.-Nonfatal electrical accidents at the surface at underground coal mines, 1 980-85-Continued. Accident type. 



61 



in 



u 
o 

H 

u 



uj 

00 




KEY 
Hand 



[TT! 1 I ] Multiple injuries 

^Eyes 

RS^\\1 Body systems 

I | Upper extremities, 

mu 1 1 i p 1 e 



F ingers 



ESS Arm 

^Back 
I Urist 



SUf 



ace 



Figure B-4.- Nonfatal electrical accidents at the surface at underground coal mines, 1980-85-Continued. Part of body. 



62 



4 St 



40-- 39 



35- 



{2 38- 

z: 

UJ 
O 
l-H 

o 25-- 



o 

UJ 
lQ 

z: 

3 



20- 



15- 



10- 




KEY 



I | Maintain, repair 

electrical equipment 



I I I I 1 1 Handle supplies, material 
Y////\ Maintain machine 
PSSS>\l Rerail equipment 

Ueld, cut 

Caging 

Operate locomotiue 



MB Idle 

~| Drill face, rib, side 
ijg£;S£i Escaping a hazard 



Figure B-5.-Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85. Activity engaged in when 
accident occurred. 



45t 



40- 



35-- 



H 30+ 

Z 

UJ 

Q 

l-H 

O £5-- 

<r 



uj 

3 



20-- 



15-- 



10-- 



5-- 



38 



26 



3 3 3 



2 2 



KEY 



I I Electrical apparatus 



I I I I [ I Conductors, cables, trolley 
po les 



Y////^ Underground mining machines 
k\SSSi Machines, office machines 
I | Flame, fire, smoke 

Eleuators, cages, skips 



bB^j Acids, alkalies (wet cement) 
I I I I 1 1 Surface mining machines 

| Ueh ic les 
plf&Sf Passenger cars, trucks 



Figure B-5.- Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85-Continued. Source of injury. 



63 



22" 
20-- 
18-- 
16- 



5 14 + 

Q 
M 

8 12 
<r 



QL 

u 



10" 



20 




rr 



KEY 
Electric ian 

Mechanic 



WZZk Miner 

IsSSSSJ Motorman 

I | Laborer, muck 

machine operator 



Labor foreman 



H^H Blaster 

I I I I I I Utility man 

| Trainee 

IP^S^vl Unknown 



Figure B-5.- Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85-Continued. Job title. 



en 

i- 

Ld 
Q 
I— I 
<_> 
<_> 
<I 



Ld 



12t 



10-- 



8- 



11 




KEY 
Unknown 



|| j j j | J Machine, not 

elsewhere classified 



V///A welder 
R^ Pump 



3 Rock drill, jack leg, 

jackhammer, drifter, etc. 



Nonpowered handtools 



JBI Roof bolter 



| | | | 1 1 Man trip, man car, jeep, 
personnel carrier, etc. 

I Powered handtools 



WMrkWh Hydraulic, electric 
core dr i 1 Is 



Figure B-5.- Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85-Continued. Machine. 



64 



35t 




KEY 



J Electrical shock 
(electrocut ion ) 



II 1 I 1 fl Electrical arc burn 



X///A Electrical burn 
(contact burn) 



E5s5sl Asphyxia 

I 1 Burn or scald (heat) 

Chemical burns 

Multiple injuries 
I I I 1 1 1 Laceration, cut, puncture 

J Sprain, strain 
[^£$£13 Bruise 



Figure B-5.-Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85-Continued. Nature of injury. 



40t 




KEY 
Body systems 

Hand 



^Eyes 

IsSSSSJ Multiple injuries 



I [ Upper extremities, 

mu 1 1 i p 1 e 



E 



Ankle 
F ingers 
Arm 
Ur ist 



BH For. 



Figure B-5.-Nonfatal electrical accidents in underground metal-nonmetal mines, 1980-85-Continued. Part of body. 



65 



C/) 



O 
M 
O 
O 



QL 

LU 



20-- 
18" 
16-- 
14" 
12-- 
10-- 



6 

4-- 

2-- 



19 




11111 



feg&pot™ 



KEY 



~] Maintain, repair 

electrical equipment 



j [ |] Handle supplies, material 
Y////\ Maintain machine 
E^3 Caging 



| | Install and maintain 

uent i lat ion 



Use powered handtools 



LHH Idle 

I || I 1 1 Moue equipment 

| Operate surface equipment 



Figure B-6.- Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85. Activity 
engaged in when accident occurred. 




KEY 



I | Electrical apparatus 

:] Acids, alkalies (wet cement) 



V///A Conductors, cables, trolley 
poles 



KSSSN Drill, rotary 

I | Movable ladders 

R££%Rj Surface mining machines 



Figure B-6.- Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85-Continued. 
Source of injury. 



66 



<r 



en 

Ld 

en 

z: 
=) 



12T 



18" 



6" 



4- 



11 




KEY 
Electrician 



I I I I II Mechanic 
Y////X Tipple operator 
K>\\S>\I Stopping builder 
I | Electrical helper 

Maintenance foreman 



b%^j Mine foreman 
I I I I 1 1 Drill operator 

| Truck driuer 
fe£Si:g£3 Laborer 



Figure B-6.-Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85-Continued. 
Job title. 



18t 



16-- 



14-- 



12-- 



y 10+ 



UJ 



8-- 



6-- 



17 



KEY 




I | Not recorded in MSHA database 
IJLLLG Skip,, eleuator, cage 



\////A Service trucks pickup, utility 
truck (not ore haulage) 



R\SSSl Nonpowered handtools 
I | Crane, derrick 



Machine, not 

elsewhere classified 



ea pump 

I I I l l I Jumbo carr i age -mounted 

drills on rails, tracks, tires 

I Compressor 

Pff£#&i Pneumatic blasting agent loader 



Figure B-6.-Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85-Continued. 
Machine. 



67 



16t 




KEY 
Electrical arc burn 



|~T] Chemical burns 



V///A Electrical shock 
(electrocution) 

KS^\\Sl Electrical burn 
(contact burn) 

I | Amputation 



Figure B-6.-Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85-Continued. 
Nature of injury. 




KEY 



I | Flash burns, electric 
I I I I 1 1 Electric shock 
Y////X Absorption of toxics 



Figure B-6.-Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 
1980-85-Continued. Accident type. 



68 




KEY 



I | Multiple injuries 

□UDEyes 



Y////X Body systems 
^Hcnd 
Face 



KR&ffi Upper extremities, 
mu 1 1 i p 1 e 



bflfld Fingers 
FFFffl Neck 

| Face / multiple parts 



Figure B-6. 
Part of body. 



-Nonfatal electrical accidents at the surface at underground metal-nonmetal mines, 1980-85-Continued. 



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; .^^ OCT 90 

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